/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 13:18:36,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 13:18:36,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 13:18:36,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 13:18:36,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 13:18:36,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 13:18:36,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 13:18:36,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-15 13:18:36,542 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 13:18:36,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 13:18:36,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 13:18:36,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 13:18:36,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 13:18:36,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 13:18:36,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 13:18:36,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 13:18:36,543 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 13:18:36,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 13:18:36,544 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 13:18:36,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 13:18:36,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 13:18:36,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 13:18:36,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 13:18:36,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 13:18:36,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 13:18:36,545 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 13:18:36,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 13:18:36,545 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 13:18:36,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 13:18:36,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 13:18:36,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 13:18:36,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 13:18:36,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 13:18:36,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 13:18:36,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 13:18:36,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 13:18:36,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 13:18:36,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 13:18:36,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 13:18:36,547 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 13:18:36,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 13:18:36,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 13:18:36,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 13:18:36,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 13:18:36,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 13:18:36,767 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 13:18:36,768 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 13:18:36,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2022-03-15 13:18:36,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61b95f779/77a94d1f59f549c7bcf6d40c34e175d4/FLAG2b0594f4d [2022-03-15 13:18:37,229 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 13:18:37,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2022-03-15 13:18:37,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61b95f779/77a94d1f59f549c7bcf6d40c34e175d4/FLAG2b0594f4d [2022-03-15 13:18:37,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61b95f779/77a94d1f59f549c7bcf6d40c34e175d4 [2022-03-15 13:18:37,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 13:18:37,258 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 13:18:37,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 13:18:37,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 13:18:37,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 13:18:37,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce959c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37, skipping insertion in model container [2022-03-15 13:18:37,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 13:18:37,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 13:18:37,463 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-03-15 13:18:37,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-03-15 13:18:37,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-03-15 13:18:37,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-03-15 13:18:37,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 13:18:37,653 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 13:18:37,663 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-03-15 13:18:37,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-03-15 13:18:37,690 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-03-15 13:18:37,690 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-03-15 13:18:37,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 13:18:37,730 INFO L208 MainTranslator]: Completed translation [2022-03-15 13:18:37,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37 WrapperNode [2022-03-15 13:18:37,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 13:18:37,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 13:18:37,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 13:18:37,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 13:18:37,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,780 INFO L137 Inliner]: procedures = 224, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 125 [2022-03-15 13:18:37,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 13:18:37,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 13:18:37,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 13:18:37,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 13:18:37,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 13:18:37,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 13:18:37,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 13:18:37,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 13:18:37,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37" (1/1) ... [2022-03-15 13:18:37,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 13:18:37,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:18:37,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 13:18:37,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 13:18:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2022-03-15 13:18:37,857 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2022-03-15 13:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 13:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 13:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 13:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 13:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 13:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 13:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 13:18:37,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 13:18:37,859 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 13:18:37,928 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 13:18:37,929 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 13:18:38,142 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 13:18:38,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 13:18:38,158 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-15 13:18:38,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 01:18:38 BoogieIcfgContainer [2022-03-15 13:18:38,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 13:18:38,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 13:18:38,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 13:18:38,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 13:18:38,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 01:18:37" (1/3) ... [2022-03-15 13:18:38,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a123a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 01:18:38, skipping insertion in model container [2022-03-15 13:18:38,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:18:37" (2/3) ... [2022-03-15 13:18:38,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a123a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 01:18:38, skipping insertion in model container [2022-03-15 13:18:38,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 01:18:38" (3/3) ... [2022-03-15 13:18:38,165 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2022-03-15 13:18:38,168 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 13:18:38,168 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 13:18:38,168 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-03-15 13:18:38,168 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 13:18:38,220 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,220 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,220 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,220 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,221 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,221 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,221 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,221 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,221 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,221 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,222 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,222 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,222 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,222 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,222 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,222 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,222 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,222 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,223 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,223 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,223 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,223 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,223 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,223 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,224 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,224 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,224 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,224 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,224 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,225 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,225 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,225 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,225 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,225 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,225 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,225 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,225 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,226 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,226 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,226 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,226 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,226 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,226 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,226 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,226 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,227 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,227 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,227 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,227 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,227 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,227 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,227 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,227 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,227 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,228 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,228 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,228 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,228 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,228 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,228 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,228 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,228 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,228 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,229 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,229 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,229 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,229 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,229 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,229 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,229 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,229 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,229 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,230 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,230 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,230 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,230 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,230 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,230 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,230 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,230 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,231 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,231 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,231 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,231 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,231 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,231 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,231 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,231 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,232 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,232 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,232 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,232 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,232 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,232 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,232 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,233 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,233 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,233 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,233 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,233 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,233 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,233 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,234 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,234 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,234 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,234 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,234 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,234 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,234 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,234 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,235 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,235 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,242 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,243 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,244 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,245 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,246 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,247 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,248 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,248 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,249 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,250 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,251 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,252 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,253 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,255 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,256 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,257 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,258 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,259 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,260 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,262 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,263 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,264 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,265 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,266 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,267 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,267 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,267 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,267 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,268 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,269 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,270 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,273 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,274 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,274 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,277 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,278 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,278 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,278 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,278 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,278 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,278 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,278 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,278 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,278 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,279 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,279 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,279 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,279 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,279 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,280 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,280 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,280 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,280 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,280 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,280 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,280 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,280 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,281 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,281 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,281 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,281 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,281 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,281 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,281 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,281 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,281 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,282 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,282 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,282 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,282 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,282 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,282 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,282 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,282 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,285 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,285 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,285 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,285 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,285 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,285 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,286 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~x~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,286 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,286 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,286 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~last~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,286 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,286 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,286 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,286 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,286 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~r~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,286 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,287 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,287 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,287 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,292 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,292 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,292 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,292 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,292 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,292 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,292 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,292 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,292 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,293 WARN L322 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:18:38,295 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-15 13:18:38,348 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 13:18:38,353 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 13:18:38,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-03-15 13:18:38,369 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 152 places, 158 transitions, 324 flow [2022-03-15 13:18:38,460 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2540 states, 2537 states have (on average 2.127709893575089) internal successors, (5398), 2539 states have internal predecessors, (5398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:38,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2537 states have (on average 2.127709893575089) internal successors, (5398), 2539 states have internal predecessors, (5398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:38,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-15 13:18:38,470 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:18:38,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:18:38,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:18:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:18:38,479 INFO L85 PathProgramCache]: Analyzing trace with hash 847621616, now seen corresponding path program 1 times [2022-03-15 13:18:38,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:18:38,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402741688] [2022-03-15 13:18:38,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:18:38,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:18:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:18:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:18:38,636 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:18:38,636 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402741688] [2022-03-15 13:18:38,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402741688] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:18:38,637 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:18:38,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 13:18:38,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232765155] [2022-03-15 13:18:38,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:18:38,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 13:18:38,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:18:38,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 13:18:38,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 13:18:38,666 INFO L87 Difference]: Start difference. First operand has 2540 states, 2537 states have (on average 2.127709893575089) internal successors, (5398), 2539 states have internal predecessors, (5398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:18:38,721 INFO L93 Difference]: Finished difference Result 2540 states and 5152 transitions. [2022-03-15 13:18:38,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 13:18:38,723 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-03-15 13:18:38,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:18:38,744 INFO L225 Difference]: With dead ends: 2540 [2022-03-15 13:18:38,744 INFO L226 Difference]: Without dead ends: 2540 [2022-03-15 13:18:38,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 13:18:38,749 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:18:38,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:18:38,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2022-03-15 13:18:38,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2540. [2022-03-15 13:18:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2537 states have (on average 2.030744974379188) internal successors, (5152), 2539 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 5152 transitions. [2022-03-15 13:18:38,901 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 5152 transitions. Word has length 40 [2022-03-15 13:18:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:18:38,901 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 5152 transitions. [2022-03-15 13:18:38,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 5152 transitions. [2022-03-15 13:18:38,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-15 13:18:38,902 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:18:38,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:18:38,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 13:18:38,903 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:18:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:18:38,906 INFO L85 PathProgramCache]: Analyzing trace with hash 506434889, now seen corresponding path program 1 times [2022-03-15 13:18:38,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:18:38,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943137142] [2022-03-15 13:18:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:18:38,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:18:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:18:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:18:38,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:18:38,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943137142] [2022-03-15 13:18:38,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943137142] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:18:38,981 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:18:38,981 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 13:18:38,982 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107251095] [2022-03-15 13:18:38,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:18:38,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 13:18:38,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:18:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 13:18:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:18:38,983 INFO L87 Difference]: Start difference. First operand 2540 states and 5152 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:39,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:18:39,019 INFO L93 Difference]: Finished difference Result 4136 states and 8424 transitions. [2022-03-15 13:18:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 13:18:39,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-03-15 13:18:39,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:18:39,033 INFO L225 Difference]: With dead ends: 4136 [2022-03-15 13:18:39,033 INFO L226 Difference]: Without dead ends: 4136 [2022-03-15 13:18:39,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:18:39,034 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 80 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:18:39,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 305 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:18:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2022-03-15 13:18:39,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3148. [2022-03-15 13:18:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3145 states have (on average 2.0419713831478536) internal successors, (6422), 3147 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 6422 transitions. [2022-03-15 13:18:39,105 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 6422 transitions. Word has length 41 [2022-03-15 13:18:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:18:39,106 INFO L470 AbstractCegarLoop]: Abstraction has 3148 states and 6422 transitions. [2022-03-15 13:18:39,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 6422 transitions. [2022-03-15 13:18:39,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-15 13:18:39,115 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:18:39,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:18:39,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 13:18:39,116 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:18:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:18:39,116 INFO L85 PathProgramCache]: Analyzing trace with hash -654644372, now seen corresponding path program 1 times [2022-03-15 13:18:39,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:18:39,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044186759] [2022-03-15 13:18:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:18:39,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:18:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:18:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:18:39,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:18:39,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044186759] [2022-03-15 13:18:39,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044186759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:18:39,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:18:39,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-15 13:18:39,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705153818] [2022-03-15 13:18:39,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:18:39,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 13:18:39,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:18:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 13:18:39,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-03-15 13:18:39,663 INFO L87 Difference]: Start difference. First operand 3148 states and 6422 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:41,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:18:41,191 INFO L93 Difference]: Finished difference Result 3509 states and 7163 transitions. [2022-03-15 13:18:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:18:41,192 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-03-15 13:18:41,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:18:41,202 INFO L225 Difference]: With dead ends: 3509 [2022-03-15 13:18:41,202 INFO L226 Difference]: Without dead ends: 3353 [2022-03-15 13:18:41,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=361, Invalid=971, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:18:41,205 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1166 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:18:41,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 2909 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 13:18:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2022-03-15 13:18:41,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3088. [2022-03-15 13:18:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 3085 states have (on average 2.045705024311183) internal successors, (6311), 3087 states have internal predecessors, (6311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 6311 transitions. [2022-03-15 13:18:41,278 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 6311 transitions. Word has length 74 [2022-03-15 13:18:41,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:18:41,280 INFO L470 AbstractCegarLoop]: Abstraction has 3088 states and 6311 transitions. [2022-03-15 13:18:41,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:41,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 6311 transitions. [2022-03-15 13:18:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:18:41,283 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:18:41,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:18:41,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 13:18:41,283 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:18:41,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:18:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash -137095055, now seen corresponding path program 1 times [2022-03-15 13:18:41,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:18:41,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897654433] [2022-03-15 13:18:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:18:41,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:18:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:18:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:18:41,984 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:18:41,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897654433] [2022-03-15 13:18:41,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897654433] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:18:41,984 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:18:41,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:18:41,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672157643] [2022-03-15 13:18:41,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:18:41,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:18:41,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:18:41,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:18:41,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:18:41,986 INFO L87 Difference]: Start difference. First operand 3088 states and 6311 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:18:47,662 INFO L93 Difference]: Finished difference Result 4311 states and 8834 transitions. [2022-03-15 13:18:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:18:47,663 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:18:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:18:47,683 INFO L225 Difference]: With dead ends: 4311 [2022-03-15 13:18:47,683 INFO L226 Difference]: Without dead ends: 4311 [2022-03-15 13:18:47,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1453, Invalid=4247, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:18:47,692 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1239 mSDsluCounter, 4043 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:18:47,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1239 Valid, 4379 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 13:18:47,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2022-03-15 13:18:47,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 3439. [2022-03-15 13:18:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3439 states, 3436 states have (on average 2.0480209545983703) internal successors, (7037), 3438 states have internal predecessors, (7037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 7037 transitions. [2022-03-15 13:18:47,781 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 7037 transitions. Word has length 96 [2022-03-15 13:18:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:18:47,781 INFO L470 AbstractCegarLoop]: Abstraction has 3439 states and 7037 transitions. [2022-03-15 13:18:47,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 7037 transitions. [2022-03-15 13:18:47,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:18:47,788 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:18:47,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:18:47,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 13:18:47,789 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:18:47,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:18:47,792 INFO L85 PathProgramCache]: Analyzing trace with hash -277531331, now seen corresponding path program 2 times [2022-03-15 13:18:47,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:18:47,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163674287] [2022-03-15 13:18:47,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:18:47,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:18:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:18:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:18:48,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:18:48,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163674287] [2022-03-15 13:18:48,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163674287] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:18:48,671 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:18:48,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-03-15 13:18:48,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033287189] [2022-03-15 13:18:48,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:18:48,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 13:18:48,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:18:48,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 13:18:48,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-03-15 13:18:48,673 INFO L87 Difference]: Start difference. First operand 3439 states and 7037 transitions. Second operand has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:18:55,798 INFO L93 Difference]: Finished difference Result 4308 states and 8822 transitions. [2022-03-15 13:18:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 13:18:55,799 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:18:55,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:18:55,813 INFO L225 Difference]: With dead ends: 4308 [2022-03-15 13:18:55,813 INFO L226 Difference]: Without dead ends: 4308 [2022-03-15 13:18:55,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1594, Invalid=4568, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:18:55,815 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1324 mSDsluCounter, 5512 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 5880 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:18:55,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 5880 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:18:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2022-03-15 13:18:55,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3443. [2022-03-15 13:18:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3443 states, 3440 states have (on average 2.04796511627907) internal successors, (7045), 3442 states have internal predecessors, (7045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:55,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 7045 transitions. [2022-03-15 13:18:55,878 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 7045 transitions. Word has length 96 [2022-03-15 13:18:55,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:18:55,879 INFO L470 AbstractCegarLoop]: Abstraction has 3443 states and 7045 transitions. [2022-03-15 13:18:55,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.310344827586207) internal successors, (96), 29 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:18:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 7045 transitions. [2022-03-15 13:18:55,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:18:55,882 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:18:55,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:18:55,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 13:18:55,882 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:18:55,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:18:55,883 INFO L85 PathProgramCache]: Analyzing trace with hash 641947087, now seen corresponding path program 3 times [2022-03-15 13:18:55,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:18:55,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998781858] [2022-03-15 13:18:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:18:55,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:18:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:18:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:18:56,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:18:56,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998781858] [2022-03-15 13:18:56,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998781858] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:18:56,510 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:18:56,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:18:56,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969699515] [2022-03-15 13:18:56,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:18:56,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:18:56,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:18:56,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:18:56,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:18:56,511 INFO L87 Difference]: Start difference. First operand 3443 states and 7045 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:19:01,794 INFO L93 Difference]: Finished difference Result 4303 states and 8811 transitions. [2022-03-15 13:19:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:19:01,795 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:19:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:19:01,805 INFO L225 Difference]: With dead ends: 4303 [2022-03-15 13:19:01,805 INFO L226 Difference]: Without dead ends: 4303 [2022-03-15 13:19:01,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1387, Invalid=3443, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 13:19:01,807 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1398 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 3747 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:19:01,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1398 Valid, 3747 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 13:19:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2022-03-15 13:19:01,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 3447. [2022-03-15 13:19:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 3444 states have (on average 2.047909407665505) internal successors, (7053), 3446 states have internal predecessors, (7053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 7053 transitions. [2022-03-15 13:19:01,856 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 7053 transitions. Word has length 96 [2022-03-15 13:19:01,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:19:01,856 INFO L470 AbstractCegarLoop]: Abstraction has 3447 states and 7053 transitions. [2022-03-15 13:19:01,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 7053 transitions. [2022-03-15 13:19:01,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:19:01,859 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:19:01,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:19:01,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 13:19:01,860 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:19:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:19:01,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1727541067, now seen corresponding path program 4 times [2022-03-15 13:19:01,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:19:01,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064315486] [2022-03-15 13:19:01,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:19:01,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:19:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:19:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:19:02,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:19:02,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064315486] [2022-03-15 13:19:02,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064315486] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:19:02,443 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:19:02,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:19:02,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913963039] [2022-03-15 13:19:02,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:19:02,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:19:02,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:19:02,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:19:02,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:19:02,445 INFO L87 Difference]: Start difference. First operand 3447 states and 7053 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:07,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:19:07,966 INFO L93 Difference]: Finished difference Result 4320 states and 8838 transitions. [2022-03-15 13:19:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:19:07,967 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:19:07,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:19:07,973 INFO L225 Difference]: With dead ends: 4320 [2022-03-15 13:19:07,974 INFO L226 Difference]: Without dead ends: 4320 [2022-03-15 13:19:07,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1216, Invalid=3614, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 13:19:07,975 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 1332 mSDsluCounter, 5139 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 5482 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:19:07,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1332 Valid, 5482 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:19:07,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2022-03-15 13:19:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 3522. [2022-03-15 13:19:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3522 states, 3519 states have (on average 2.048025007104291) internal successors, (7207), 3521 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:08,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 7207 transitions. [2022-03-15 13:19:08,030 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 7207 transitions. Word has length 96 [2022-03-15 13:19:08,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:19:08,030 INFO L470 AbstractCegarLoop]: Abstraction has 3522 states and 7207 transitions. [2022-03-15 13:19:08,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 7207 transitions. [2022-03-15 13:19:08,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:19:08,036 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:19:08,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:19:08,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 13:19:08,037 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:19:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:19:08,038 INFO L85 PathProgramCache]: Analyzing trace with hash -808062649, now seen corresponding path program 5 times [2022-03-15 13:19:08,038 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:19:08,038 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924972914] [2022-03-15 13:19:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:19:08,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:19:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:19:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:19:08,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:19:08,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924972914] [2022-03-15 13:19:08,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924972914] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:19:08,839 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:19:08,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:19:08,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701009119] [2022-03-15 13:19:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:19:08,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:19:08,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:19:08,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:19:08,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:19:08,840 INFO L87 Difference]: Start difference. First operand 3522 states and 7207 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:13,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:19:13,302 INFO L93 Difference]: Finished difference Result 4304 states and 8804 transitions. [2022-03-15 13:19:13,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 13:19:13,302 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:19:13,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:19:13,309 INFO L225 Difference]: With dead ends: 4304 [2022-03-15 13:19:13,310 INFO L226 Difference]: Without dead ends: 4304 [2022-03-15 13:19:13,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1178, Invalid=2982, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 13:19:13,311 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1166 mSDsluCounter, 4175 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 4513 SdHoareTripleChecker+Invalid, 1975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 13:19:13,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 4513 Invalid, 1975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 13:19:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4304 states. [2022-03-15 13:19:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4304 to 3720. [2022-03-15 13:19:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3720 states, 3717 states have (on average 2.0497713209577615) internal successors, (7619), 3719 states have internal predecessors, (7619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:13,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 7619 transitions. [2022-03-15 13:19:13,377 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 7619 transitions. Word has length 96 [2022-03-15 13:19:13,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:19:13,378 INFO L470 AbstractCegarLoop]: Abstraction has 3720 states and 7619 transitions. [2022-03-15 13:19:13,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 7619 transitions. [2022-03-15 13:19:13,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:19:13,382 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:19:13,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:19:13,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 13:19:13,383 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:19:13,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:19:13,383 INFO L85 PathProgramCache]: Analyzing trace with hash 393725621, now seen corresponding path program 6 times [2022-03-15 13:19:13,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:19:13,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582597169] [2022-03-15 13:19:13,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:19:13,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:19:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:19:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:19:14,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:19:14,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582597169] [2022-03-15 13:19:14,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582597169] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:19:14,011 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:19:14,011 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:19:14,011 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411930868] [2022-03-15 13:19:14,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:19:14,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:19:14,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:19:14,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:19:14,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:19:14,012 INFO L87 Difference]: Start difference. First operand 3720 states and 7619 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:18,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:19:18,796 INFO L93 Difference]: Finished difference Result 4381 states and 8960 transitions. [2022-03-15 13:19:18,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 13:19:18,797 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:19:18,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:19:18,803 INFO L225 Difference]: With dead ends: 4381 [2022-03-15 13:19:18,804 INFO L226 Difference]: Without dead ends: 4381 [2022-03-15 13:19:18,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1205, Invalid=3085, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 13:19:18,807 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1246 mSDsluCounter, 3617 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:19:18,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1246 Valid, 3958 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 13:19:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2022-03-15 13:19:18,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3695. [2022-03-15 13:19:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3695 states, 3692 states have (on average 2.049024918743229) internal successors, (7565), 3694 states have internal predecessors, (7565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:18,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 7565 transitions. [2022-03-15 13:19:18,862 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 7565 transitions. Word has length 96 [2022-03-15 13:19:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:19:18,862 INFO L470 AbstractCegarLoop]: Abstraction has 3695 states and 7565 transitions. [2022-03-15 13:19:18,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 7565 transitions. [2022-03-15 13:19:18,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:19:18,868 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:19:18,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:19:18,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-15 13:19:18,868 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:19:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:19:18,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1829581135, now seen corresponding path program 7 times [2022-03-15 13:19:18,869 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:19:18,869 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633466926] [2022-03-15 13:19:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:19:18,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:19:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:19:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:19:19,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:19:19,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633466926] [2022-03-15 13:19:19,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633466926] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:19:19,436 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:19:19,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-15 13:19:19,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942280129] [2022-03-15 13:19:19,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:19:19,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 13:19:19,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:19:19,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 13:19:19,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-03-15 13:19:19,437 INFO L87 Difference]: Start difference. First operand 3695 states and 7565 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:19:29,007 INFO L93 Difference]: Finished difference Result 4377 states and 8954 transitions. [2022-03-15 13:19:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-15 13:19:29,007 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:19:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:19:29,014 INFO L225 Difference]: With dead ends: 4377 [2022-03-15 13:19:29,015 INFO L226 Difference]: Without dead ends: 4377 [2022-03-15 13:19:29,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2938, Invalid=7162, Unknown=0, NotChecked=0, Total=10100 [2022-03-15 13:19:29,017 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1558 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 4378 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:19:29,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 4378 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 13:19:29,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2022-03-15 13:19:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 3525. [2022-03-15 13:19:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3522 states have (on average 2.045428733674049) internal successors, (7204), 3524 states have internal predecessors, (7204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 7204 transitions. [2022-03-15 13:19:29,066 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 7204 transitions. Word has length 96 [2022-03-15 13:19:29,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:19:29,066 INFO L470 AbstractCegarLoop]: Abstraction has 3525 states and 7204 transitions. [2022-03-15 13:19:29,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 7204 transitions. [2022-03-15 13:19:29,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:19:29,070 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:19:29,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:19:29,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-15 13:19:29,070 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:19:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:19:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1757374095, now seen corresponding path program 8 times [2022-03-15 13:19:29,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:19:29,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146440035] [2022-03-15 13:19:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:19:29,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:19:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:19:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:19:29,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:19:29,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146440035] [2022-03-15 13:19:29,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146440035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:19:29,602 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:19:29,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:19:29,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093647361] [2022-03-15 13:19:29,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:19:29,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:19:29,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:19:29,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:19:29,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:19:29,604 INFO L87 Difference]: Start difference. First operand 3525 states and 7204 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:19:33,789 INFO L93 Difference]: Finished difference Result 5034 states and 10338 transitions. [2022-03-15 13:19:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:19:33,789 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:19:33,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:19:33,802 INFO L225 Difference]: With dead ends: 5034 [2022-03-15 13:19:33,802 INFO L226 Difference]: Without dead ends: 5034 [2022-03-15 13:19:33,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1452, Invalid=4248, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:19:33,804 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1184 mSDsluCounter, 4126 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 4471 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:19:33,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1184 Valid, 4471 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 13:19:33,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2022-03-15 13:19:33,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 3759. [2022-03-15 13:19:33,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3756 states have (on average 2.0543130990415337) internal successors, (7716), 3758 states have internal predecessors, (7716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:33,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 7716 transitions. [2022-03-15 13:19:33,858 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 7716 transitions. Word has length 96 [2022-03-15 13:19:33,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:19:33,859 INFO L470 AbstractCegarLoop]: Abstraction has 3759 states and 7716 transitions. [2022-03-15 13:19:33,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:33,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 7716 transitions. [2022-03-15 13:19:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:19:33,862 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:19:33,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:19:33,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-15 13:19:33,863 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:19:33,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:19:33,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1616937819, now seen corresponding path program 9 times [2022-03-15 13:19:33,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:19:33,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408313790] [2022-03-15 13:19:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:19:33,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:19:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:19:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:19:34,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:19:34,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408313790] [2022-03-15 13:19:34,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408313790] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:19:34,436 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:19:34,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:19:34,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591221797] [2022-03-15 13:19:34,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:19:34,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:19:34,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:19:34,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:19:34,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:19:34,437 INFO L87 Difference]: Start difference. First operand 3759 states and 7716 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:39,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:19:39,227 INFO L93 Difference]: Finished difference Result 5031 states and 10326 transitions. [2022-03-15 13:19:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 13:19:39,227 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:19:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:19:39,232 INFO L225 Difference]: With dead ends: 5031 [2022-03-15 13:19:39,233 INFO L226 Difference]: Without dead ends: 5031 [2022-03-15 13:19:39,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1433, Invalid=4117, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:19:39,235 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1216 mSDsluCounter, 4425 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 4772 SdHoareTripleChecker+Invalid, 2046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:19:39,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 4772 Invalid, 2046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 13:19:39,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2022-03-15 13:19:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 3763. [2022-03-15 13:19:39,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3763 states, 3760 states have (on average 2.054255319148936) internal successors, (7724), 3762 states have internal predecessors, (7724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3763 states to 3763 states and 7724 transitions. [2022-03-15 13:19:39,285 INFO L78 Accepts]: Start accepts. Automaton has 3763 states and 7724 transitions. Word has length 96 [2022-03-15 13:19:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:19:39,285 INFO L470 AbstractCegarLoop]: Abstraction has 3763 states and 7724 transitions. [2022-03-15 13:19:39,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:39,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3763 states and 7724 transitions. [2022-03-15 13:19:39,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:19:39,293 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:19:39,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:19:39,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-15 13:19:39,294 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:19:39,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:19:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1758551059, now seen corresponding path program 10 times [2022-03-15 13:19:39,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:19:39,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829837778] [2022-03-15 13:19:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:19:39,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:19:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:19:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:19:39,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:19:39,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829837778] [2022-03-15 13:19:39,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829837778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:19:39,906 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:19:39,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:19:39,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357889063] [2022-03-15 13:19:39,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:19:39,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:19:39,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:19:39,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:19:39,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:19:39,907 INFO L87 Difference]: Start difference. First operand 3763 states and 7724 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:45,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:19:45,607 INFO L93 Difference]: Finished difference Result 5072 states and 10409 transitions. [2022-03-15 13:19:45,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:19:45,607 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:19:45,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:19:45,612 INFO L225 Difference]: With dead ends: 5072 [2022-03-15 13:19:45,612 INFO L226 Difference]: Without dead ends: 5072 [2022-03-15 13:19:45,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1386, Invalid=3444, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 13:19:45,614 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1341 mSDsluCounter, 4918 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 5269 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:19:45,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 5269 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:19:45,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2022-03-15 13:19:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 3794. [2022-03-15 13:19:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3794 states, 3791 states have (on average 2.0543392244790293) internal successors, (7788), 3793 states have internal predecessors, (7788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 7788 transitions. [2022-03-15 13:19:45,668 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 7788 transitions. Word has length 96 [2022-03-15 13:19:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:19:45,669 INFO L470 AbstractCegarLoop]: Abstraction has 3794 states and 7788 transitions. [2022-03-15 13:19:45,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 7788 transitions. [2022-03-15 13:19:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:19:45,672 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:19:45,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:19:45,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-15 13:19:45,673 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:19:45,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:19:45,673 INFO L85 PathProgramCache]: Analyzing trace with hash 166928083, now seen corresponding path program 11 times [2022-03-15 13:19:45,673 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:19:45,673 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326583790] [2022-03-15 13:19:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:19:45,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:19:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:19:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:19:46,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:19:46,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326583790] [2022-03-15 13:19:46,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326583790] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:19:46,215 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:19:46,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:19:46,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114143638] [2022-03-15 13:19:46,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:19:46,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:19:46,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:19:46,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:19:46,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:19:46,216 INFO L87 Difference]: Start difference. First operand 3794 states and 7788 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:51,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:19:51,646 INFO L93 Difference]: Finished difference Result 4966 states and 10183 transitions. [2022-03-15 13:19:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:19:51,646 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:19:51,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:19:51,652 INFO L225 Difference]: With dead ends: 4966 [2022-03-15 13:19:51,652 INFO L226 Difference]: Without dead ends: 4966 [2022-03-15 13:19:51,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1215, Invalid=3615, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 13:19:51,653 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1262 mSDsluCounter, 4076 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 4428 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 13:19:51,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1262 Valid, 4428 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 13:19:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4966 states. [2022-03-15 13:19:51,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4966 to 3846. [2022-03-15 13:19:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3843 states have (on average 2.053343741868332) internal successors, (7891), 3845 states have internal predecessors, (7891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 7891 transitions. [2022-03-15 13:19:51,702 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 7891 transitions. Word has length 96 [2022-03-15 13:19:51,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:19:51,703 INFO L470 AbstractCegarLoop]: Abstraction has 3846 states and 7891 transitions. [2022-03-15 13:19:51,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 7891 transitions. [2022-03-15 13:19:51,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:19:51,706 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:19:51,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:19:51,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-15 13:19:51,706 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:19:51,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:19:51,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1086406501, now seen corresponding path program 12 times [2022-03-15 13:19:51,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:19:51,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967722346] [2022-03-15 13:19:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:19:51,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:19:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:19:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:19:52,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:19:52,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967722346] [2022-03-15 13:19:52,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967722346] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:19:52,329 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:19:52,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:19:52,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750331452] [2022-03-15 13:19:52,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:19:52,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:19:52,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:19:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:19:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:19:52,330 INFO L87 Difference]: Start difference. First operand 3846 states and 7891 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:19:57,798 INFO L93 Difference]: Finished difference Result 4908 states and 10063 transitions. [2022-03-15 13:19:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 13:19:57,798 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:19:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:19:57,803 INFO L225 Difference]: With dead ends: 4908 [2022-03-15 13:19:57,804 INFO L226 Difference]: Without dead ends: 4908 [2022-03-15 13:19:57,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1179, Invalid=2981, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 13:19:57,804 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1219 mSDsluCounter, 4294 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:19:57,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 4641 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 13:19:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4908 states. [2022-03-15 13:19:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4908 to 3774. [2022-03-15 13:19:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3774 states, 3771 states have (on average 2.049058605144524) internal successors, (7727), 3773 states have internal predecessors, (7727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 7727 transitions. [2022-03-15 13:19:57,854 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 7727 transitions. Word has length 96 [2022-03-15 13:19:57,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:19:57,855 INFO L470 AbstractCegarLoop]: Abstraction has 3774 states and 7727 transitions. [2022-03-15 13:19:57,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:19:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 7727 transitions. [2022-03-15 13:19:57,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:19:57,858 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:19:57,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:19:57,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-15 13:19:57,858 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:19:57,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:19:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2006772525, now seen corresponding path program 13 times [2022-03-15 13:19:57,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:19:57,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101767611] [2022-03-15 13:19:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:19:57,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:19:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:19:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:19:58,434 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:19:58,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101767611] [2022-03-15 13:19:58,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101767611] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:19:58,435 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:19:58,435 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:19:58,435 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805844244] [2022-03-15 13:19:58,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:19:58,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:19:58,435 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:19:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:19:58,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:19:58,436 INFO L87 Difference]: Start difference. First operand 3774 states and 7727 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:20:03,806 INFO L93 Difference]: Finished difference Result 4945 states and 10131 transitions. [2022-03-15 13:20:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 13:20:03,806 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:20:03,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:20:03,812 INFO L225 Difference]: With dead ends: 4945 [2022-03-15 13:20:03,812 INFO L226 Difference]: Without dead ends: 4945 [2022-03-15 13:20:03,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1204, Invalid=3086, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 13:20:03,814 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1229 mSDsluCounter, 4101 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 4451 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:20:03,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1229 Valid, 4451 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 13:20:03,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4945 states. [2022-03-15 13:20:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4945 to 3857. [2022-03-15 13:20:03,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3857 states, 3854 states have (on average 2.048521017125065) internal successors, (7895), 3856 states have internal predecessors, (7895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 7895 transitions. [2022-03-15 13:20:03,890 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 7895 transitions. Word has length 96 [2022-03-15 13:20:03,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:20:03,890 INFO L470 AbstractCegarLoop]: Abstraction has 3857 states and 7895 transitions. [2022-03-15 13:20:03,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:03,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 7895 transitions. [2022-03-15 13:20:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:20:03,894 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:20:03,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:20:03,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-15 13:20:03,895 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:20:03,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:20:03,896 INFO L85 PathProgramCache]: Analyzing trace with hash -570917011, now seen corresponding path program 14 times [2022-03-15 13:20:03,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:20:03,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520461855] [2022-03-15 13:20:03,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:20:03,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:20:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:20:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:20:04,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:20:04,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520461855] [2022-03-15 13:20:04,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520461855] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:20:04,363 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:20:04,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-15 13:20:04,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19990336] [2022-03-15 13:20:04,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:20:04,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 13:20:04,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:20:04,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 13:20:04,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2022-03-15 13:20:04,365 INFO L87 Difference]: Start difference. First operand 3857 states and 7895 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:14,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:20:14,652 INFO L93 Difference]: Finished difference Result 5371 states and 10998 transitions. [2022-03-15 13:20:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-03-15 13:20:14,652 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:20:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:20:14,657 INFO L225 Difference]: With dead ends: 5371 [2022-03-15 13:20:14,657 INFO L226 Difference]: Without dead ends: 5371 [2022-03-15 13:20:14,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3739, Invalid=9143, Unknown=0, NotChecked=0, Total=12882 [2022-03-15 13:20:14,659 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 1467 mSDsluCounter, 4491 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 4948 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:20:14,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 4948 Invalid, 2598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:20:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2022-03-15 13:20:14,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 3544. [2022-03-15 13:20:14,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 3541 states have (on average 2.0454673820954534) internal successors, (7243), 3543 states have internal predecessors, (7243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 7243 transitions. [2022-03-15 13:20:14,700 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 7243 transitions. Word has length 96 [2022-03-15 13:20:14,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:20:14,701 INFO L470 AbstractCegarLoop]: Abstraction has 3544 states and 7243 transitions. [2022-03-15 13:20:14,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:14,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 7243 transitions. [2022-03-15 13:20:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:20:14,704 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:20:14,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:20:14,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-15 13:20:14,704 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:20:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:20:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2037360013, now seen corresponding path program 15 times [2022-03-15 13:20:14,704 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:20:14,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264126522] [2022-03-15 13:20:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:20:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:20:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:20:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:20:15,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:20:15,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264126522] [2022-03-15 13:20:15,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264126522] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:20:15,198 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:20:15,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:20:15,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423012426] [2022-03-15 13:20:15,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:20:15,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:20:15,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:20:15,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:20:15,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:20:15,201 INFO L87 Difference]: Start difference. First operand 3544 states and 7243 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:25,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:20:25,333 INFO L93 Difference]: Finished difference Result 4892 states and 9992 transitions. [2022-03-15 13:20:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-03-15 13:20:25,334 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:20:25,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:20:25,339 INFO L225 Difference]: With dead ends: 4892 [2022-03-15 13:20:25,339 INFO L226 Difference]: Without dead ends: 4892 [2022-03-15 13:20:25,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1923 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=3366, Invalid=8406, Unknown=0, NotChecked=0, Total=11772 [2022-03-15 13:20:25,340 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1518 mSDsluCounter, 4109 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 4491 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:20:25,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1518 Valid, 4491 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:20:25,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2022-03-15 13:20:25,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 4008. [2022-03-15 13:20:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 4005 states have (on average 2.0454431960049937) internal successors, (8192), 4007 states have internal predecessors, (8192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 8192 transitions. [2022-03-15 13:20:25,385 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 8192 transitions. Word has length 96 [2022-03-15 13:20:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:20:25,385 INFO L470 AbstractCegarLoop]: Abstraction has 4008 states and 8192 transitions. [2022-03-15 13:20:25,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 8192 transitions. [2022-03-15 13:20:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:20:25,389 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:20:25,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:20:25,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-15 13:20:25,389 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:20:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:20:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash 155436657, now seen corresponding path program 16 times [2022-03-15 13:20:25,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:20:25,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315101930] [2022-03-15 13:20:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:20:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:20:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:20:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:20:25,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:20:25,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315101930] [2022-03-15 13:20:25,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315101930] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:20:25,918 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:20:25,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:20:25,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112977372] [2022-03-15 13:20:25,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:20:25,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:20:25,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:20:25,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:20:25,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:20:25,919 INFO L87 Difference]: Start difference. First operand 4008 states and 8192 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:20:32,088 INFO L93 Difference]: Finished difference Result 5127 states and 10527 transitions. [2022-03-15 13:20:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:20:32,088 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:20:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:20:32,094 INFO L225 Difference]: With dead ends: 5127 [2022-03-15 13:20:32,094 INFO L226 Difference]: Without dead ends: 5127 [2022-03-15 13:20:32,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1451, Invalid=4249, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:20:32,096 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1187 mSDsluCounter, 5026 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 5364 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:20:32,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 5364 Invalid, 2397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 13:20:32,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2022-03-15 13:20:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 4232. [2022-03-15 13:20:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 4229 states have (on average 2.0534405296760463) internal successors, (8684), 4231 states have internal predecessors, (8684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 8684 transitions. [2022-03-15 13:20:32,143 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 8684 transitions. Word has length 96 [2022-03-15 13:20:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:20:32,144 INFO L470 AbstractCegarLoop]: Abstraction has 4232 states and 8684 transitions. [2022-03-15 13:20:32,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:32,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 8684 transitions. [2022-03-15 13:20:32,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:20:32,148 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:20:32,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:20:32,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-15 13:20:32,148 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:20:32,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:20:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash 15000381, now seen corresponding path program 17 times [2022-03-15 13:20:32,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:20:32,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473940434] [2022-03-15 13:20:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:20:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:20:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:20:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:20:32,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:20:32,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473940434] [2022-03-15 13:20:32,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473940434] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:20:32,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:20:32,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:20:32,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138994677] [2022-03-15 13:20:32,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:20:32,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:20:32,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:20:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:20:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:20:32,739 INFO L87 Difference]: Start difference. First operand 4232 states and 8684 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:37,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:20:37,429 INFO L93 Difference]: Finished difference Result 5124 states and 10515 transitions. [2022-03-15 13:20:37,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 13:20:37,429 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:20:37,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:20:37,435 INFO L225 Difference]: With dead ends: 5124 [2022-03-15 13:20:37,435 INFO L226 Difference]: Without dead ends: 5124 [2022-03-15 13:20:37,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1432, Invalid=4118, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:20:37,436 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1285 mSDsluCounter, 3913 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:20:37,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1285 Valid, 4253 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 13:20:37,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5124 states. [2022-03-15 13:20:37,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5124 to 4236. [2022-03-15 13:20:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4236 states, 4233 states have (on average 2.0533900307110797) internal successors, (8692), 4235 states have internal predecessors, (8692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4236 states to 4236 states and 8692 transitions. [2022-03-15 13:20:37,484 INFO L78 Accepts]: Start accepts. Automaton has 4236 states and 8692 transitions. Word has length 96 [2022-03-15 13:20:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:20:37,484 INFO L470 AbstractCegarLoop]: Abstraction has 4236 states and 8692 transitions. [2022-03-15 13:20:37,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:37,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4236 states and 8692 transitions. [2022-03-15 13:20:37,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:20:37,489 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:20:37,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:20:37,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-15 13:20:37,490 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:20:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:20:37,490 INFO L85 PathProgramCache]: Analyzing trace with hash 934478799, now seen corresponding path program 18 times [2022-03-15 13:20:37,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:20:37,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489843880] [2022-03-15 13:20:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:20:37,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:20:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:20:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:20:38,198 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:20:38,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489843880] [2022-03-15 13:20:38,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489843880] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:20:38,198 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:20:38,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:20:38,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929124753] [2022-03-15 13:20:38,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:20:38,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:20:38,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:20:38,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:20:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:20:38,199 INFO L87 Difference]: Start difference. First operand 4236 states and 8692 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:20:44,601 INFO L93 Difference]: Finished difference Result 5119 states and 10504 transitions. [2022-03-15 13:20:44,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:20:44,601 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:20:44,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:20:44,607 INFO L225 Difference]: With dead ends: 5119 [2022-03-15 13:20:44,607 INFO L226 Difference]: Without dead ends: 5119 [2022-03-15 13:20:44,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1384, Invalid=3446, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 13:20:44,608 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1336 mSDsluCounter, 4501 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 4845 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:20:44,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1336 Valid, 4845 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 13:20:44,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2022-03-15 13:20:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 4240. [2022-03-15 13:20:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4240 states, 4237 states have (on average 2.0533396270946422) internal successors, (8700), 4239 states have internal predecessors, (8700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4240 states to 4240 states and 8700 transitions. [2022-03-15 13:20:44,650 INFO L78 Accepts]: Start accepts. Automaton has 4240 states and 8700 transitions. Word has length 96 [2022-03-15 13:20:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:20:44,650 INFO L470 AbstractCegarLoop]: Abstraction has 4240 states and 8700 transitions. [2022-03-15 13:20:44,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:44,650 INFO L276 IsEmpty]: Start isEmpty. Operand 4240 states and 8700 transitions. [2022-03-15 13:20:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:20:44,653 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:20:44,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:20:44,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-15 13:20:44,654 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:20:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:20:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1435009355, now seen corresponding path program 19 times [2022-03-15 13:20:44,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:20:44,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804632596] [2022-03-15 13:20:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:20:44,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:20:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:20:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:20:45,204 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:20:45,204 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804632596] [2022-03-15 13:20:45,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804632596] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:20:45,204 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:20:45,204 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:20:45,204 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442535684] [2022-03-15 13:20:45,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:20:45,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:20:45,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:20:45,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:20:45,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:20:45,205 INFO L87 Difference]: Start difference. First operand 4240 states and 8700 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:49,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:20:49,971 INFO L93 Difference]: Finished difference Result 5036 states and 10324 transitions. [2022-03-15 13:20:49,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:20:49,971 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:20:49,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:20:49,976 INFO L225 Difference]: With dead ends: 5036 [2022-03-15 13:20:49,977 INFO L226 Difference]: Without dead ends: 5036 [2022-03-15 13:20:49,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 13:20:49,978 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1249 mSDsluCounter, 4377 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 4722 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 13:20:49,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 4722 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 13:20:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2022-03-15 13:20:50,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4292. [2022-03-15 13:20:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 4289 states have (on average 2.0524597808346936) internal successors, (8803), 4291 states have internal predecessors, (8803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:50,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 8803 transitions. [2022-03-15 13:20:50,038 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 8803 transitions. Word has length 96 [2022-03-15 13:20:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:20:50,038 INFO L470 AbstractCegarLoop]: Abstraction has 4292 states and 8803 transitions. [2022-03-15 13:20:50,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 8803 transitions. [2022-03-15 13:20:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:20:50,050 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:20:50,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:20:50,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-15 13:20:50,051 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:20:50,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:20:50,051 INFO L85 PathProgramCache]: Analyzing trace with hash -515530937, now seen corresponding path program 20 times [2022-03-15 13:20:50,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:20:50,051 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922671365] [2022-03-15 13:20:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:20:50,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:20:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:20:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:20:50,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:20:50,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922671365] [2022-03-15 13:20:50,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922671365] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:20:50,848 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:20:50,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:20:50,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484278526] [2022-03-15 13:20:50,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:20:50,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:20:50,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:20:50,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:20:50,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:20:50,849 INFO L87 Difference]: Start difference. First operand 4292 states and 8803 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:20:55,854 INFO L93 Difference]: Finished difference Result 4974 states and 10196 transitions. [2022-03-15 13:20:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 13:20:55,854 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:20:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:20:55,859 INFO L225 Difference]: With dead ends: 4974 [2022-03-15 13:20:55,859 INFO L226 Difference]: Without dead ends: 4974 [2022-03-15 13:20:55,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1176, Invalid=2984, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 13:20:55,860 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1197 mSDsluCounter, 4336 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 13:20:55,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 4676 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-15 13:20:55,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4974 states. [2022-03-15 13:20:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4974 to 4247. [2022-03-15 13:20:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 4244 states have (on average 2.048774740810556) internal successors, (8695), 4246 states have internal predecessors, (8695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 8695 transitions. [2022-03-15 13:20:55,906 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 8695 transitions. Word has length 96 [2022-03-15 13:20:55,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:20:55,907 INFO L470 AbstractCegarLoop]: Abstraction has 4247 states and 8695 transitions. [2022-03-15 13:20:55,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:20:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 8695 transitions. [2022-03-15 13:20:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:20:55,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:20:55,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:20:55,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-15 13:20:55,912 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:20:55,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:20:55,912 INFO L85 PathProgramCache]: Analyzing trace with hash 686257333, now seen corresponding path program 21 times [2022-03-15 13:20:55,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:20:55,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293163289] [2022-03-15 13:20:55,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:20:55,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:20:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:20:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:20:56,495 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:20:56,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293163289] [2022-03-15 13:20:56,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293163289] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:20:56,496 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:20:56,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-15 13:20:56,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408987577] [2022-03-15 13:20:56,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:20:56,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 13:20:56,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:20:56,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 13:20:56,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:20:56,498 INFO L87 Difference]: Start difference. First operand 4247 states and 8695 transitions. Second operand has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:21:01,201 INFO L93 Difference]: Finished difference Result 4992 states and 10226 transitions. [2022-03-15 13:21:01,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 13:21:01,201 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:21:01,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:21:01,206 INFO L225 Difference]: With dead ends: 4992 [2022-03-15 13:21:01,206 INFO L226 Difference]: Without dead ends: 4992 [2022-03-15 13:21:01,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1203, Invalid=3087, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 13:21:01,208 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 1207 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:21:01,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 4546 Invalid, 2085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 13:21:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2022-03-15 13:21:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 4080. [2022-03-15 13:21:01,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 4077 states have (on average 2.0466028942850136) internal successors, (8344), 4079 states have internal predecessors, (8344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 8344 transitions. [2022-03-15 13:21:01,250 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 8344 transitions. Word has length 96 [2022-03-15 13:21:01,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:21:01,250 INFO L470 AbstractCegarLoop]: Abstraction has 4080 states and 8344 transitions. [2022-03-15 13:21:01,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 27 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 8344 transitions. [2022-03-15 13:21:01,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:21:01,255 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:21:01,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:21:01,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-15 13:21:01,256 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:21:01,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:21:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2122112847, now seen corresponding path program 22 times [2022-03-15 13:21:01,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:21:01,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762145110] [2022-03-15 13:21:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:21:01,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:21:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:21:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:21:01,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:21:01,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762145110] [2022-03-15 13:21:01,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762145110] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:21:01,685 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:21:01,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-15 13:21:01,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479793269] [2022-03-15 13:21:01,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:21:01,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 13:21:01,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:21:01,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 13:21:01,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-03-15 13:21:01,686 INFO L87 Difference]: Start difference. First operand 4080 states and 8344 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:21:05,602 INFO L93 Difference]: Finished difference Result 5029 states and 10300 transitions. [2022-03-15 13:21:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 13:21:05,603 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:21:05,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:21:05,608 INFO L225 Difference]: With dead ends: 5029 [2022-03-15 13:21:05,608 INFO L226 Difference]: Without dead ends: 5029 [2022-03-15 13:21:05,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1251, Invalid=3039, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 13:21:05,609 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1263 mSDsluCounter, 3935 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:21:05,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 4285 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 13:21:05,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2022-03-15 13:21:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 4017. [2022-03-15 13:21:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 4014 states have (on average 2.0455904334828103) internal successors, (8211), 4016 states have internal predecessors, (8211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 8211 transitions. [2022-03-15 13:21:05,648 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 8211 transitions. Word has length 96 [2022-03-15 13:21:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:21:05,648 INFO L470 AbstractCegarLoop]: Abstraction has 4017 states and 8211 transitions. [2022-03-15 13:21:05,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 8211 transitions. [2022-03-15 13:21:05,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:21:05,651 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:21:05,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:21:05,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-15 13:21:05,652 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:21:05,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:21:05,652 INFO L85 PathProgramCache]: Analyzing trace with hash 435422575, now seen corresponding path program 23 times [2022-03-15 13:21:05,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:21:05,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314188612] [2022-03-15 13:21:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:21:05,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:21:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:21:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:21:06,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:21:06,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314188612] [2022-03-15 13:21:06,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314188612] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:21:06,163 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:21:06,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-15 13:21:06,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114410700] [2022-03-15 13:21:06,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:21:06,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 13:21:06,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:21:06,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 13:21:06,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-03-15 13:21:06,165 INFO L87 Difference]: Start difference. First operand 4017 states and 8211 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:17,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:21:17,228 INFO L93 Difference]: Finished difference Result 5491 states and 11242 transitions. [2022-03-15 13:21:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-15 13:21:17,229 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:21:17,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:21:17,235 INFO L225 Difference]: With dead ends: 5491 [2022-03-15 13:21:17,235 INFO L226 Difference]: Without dead ends: 5491 [2022-03-15 13:21:17,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2465 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=4244, Invalid=10518, Unknown=0, NotChecked=0, Total=14762 [2022-03-15 13:21:17,236 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 1246 mSDsluCounter, 5184 mSDsCounter, 0 mSdLazyCounter, 3119 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 5650 SdHoareTripleChecker+Invalid, 3155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:21:17,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1246 Valid, 5650 Invalid, 3155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3119 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:21:17,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2022-03-15 13:21:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 4008. [2022-03-15 13:21:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 4005 states have (on average 2.0454431960049937) internal successors, (8192), 4007 states have internal predecessors, (8192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:17,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 8192 transitions. [2022-03-15 13:21:17,286 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 8192 transitions. Word has length 96 [2022-03-15 13:21:17,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:21:17,287 INFO L470 AbstractCegarLoop]: Abstraction has 4008 states and 8192 transitions. [2022-03-15 13:21:17,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:17,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 8192 transitions. [2022-03-15 13:21:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-15 13:21:17,290 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:21:17,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:21:17,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-15 13:21:17,291 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:21:17,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:21:17,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1424536301, now seen corresponding path program 24 times [2022-03-15 13:21:17,291 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:21:17,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791410237] [2022-03-15 13:21:17,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:21:17,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:21:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:21:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:21:17,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:21:17,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791410237] [2022-03-15 13:21:17,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791410237] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:21:17,772 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:21:17,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-15 13:21:17,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318921524] [2022-03-15 13:21:17,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:21:17,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 13:21:17,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:21:17,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 13:21:17,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2022-03-15 13:21:17,773 INFO L87 Difference]: Start difference. First operand 4008 states and 8192 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:27,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:21:27,846 INFO L93 Difference]: Finished difference Result 4993 states and 10196 transitions. [2022-03-15 13:21:27,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-15 13:21:27,846 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-03-15 13:21:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:21:27,852 INFO L225 Difference]: With dead ends: 4993 [2022-03-15 13:21:27,852 INFO L226 Difference]: Without dead ends: 4993 [2022-03-15 13:21:27,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3743, Invalid=9367, Unknown=0, NotChecked=0, Total=13110 [2022-03-15 13:21:27,853 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1207 mSDsluCounter, 3902 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 4276 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:21:27,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 4276 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 13:21:27,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2022-03-15 13:21:27,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 3630. [2022-03-15 13:21:27,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 3627 states have (on average 2.044940722360077) internal successors, (7417), 3629 states have internal predecessors, (7417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 7417 transitions. [2022-03-15 13:21:27,890 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 7417 transitions. Word has length 96 [2022-03-15 13:21:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:21:27,890 INFO L470 AbstractCegarLoop]: Abstraction has 3630 states and 7417 transitions. [2022-03-15 13:21:27,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 7417 transitions. [2022-03-15 13:21:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:21:27,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:21:27,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:21:27,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-15 13:21:27,906 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:21:27,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:21:27,906 INFO L85 PathProgramCache]: Analyzing trace with hash -409774949, now seen corresponding path program 1 times [2022-03-15 13:21:27,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:21:27,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819699470] [2022-03-15 13:21:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:21:27,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:21:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:21:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:21:28,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:21:28,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819699470] [2022-03-15 13:21:28,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819699470] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:21:28,727 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:21:28,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:21:28,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323116308] [2022-03-15 13:21:28,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:21:28,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:21:28,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:21:28,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:21:28,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:21:28,728 INFO L87 Difference]: Start difference. First operand 3630 states and 7417 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:21:33,333 INFO L93 Difference]: Finished difference Result 5451 states and 11188 transitions. [2022-03-15 13:21:33,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:21:33,334 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:21:33,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:21:33,340 INFO L225 Difference]: With dead ends: 5451 [2022-03-15 13:21:33,340 INFO L226 Difference]: Without dead ends: 5451 [2022-03-15 13:21:33,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=946, Invalid=4604, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:21:33,341 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 1622 mSDsluCounter, 9090 mSDsCounter, 0 mSdLazyCounter, 3404 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 9615 SdHoareTripleChecker+Invalid, 3444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:21:33,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1622 Valid, 9615 Invalid, 3444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3404 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:21:33,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2022-03-15 13:21:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 5035. [2022-03-15 13:21:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5035 states, 5032 states have (on average 2.050079491255962) internal successors, (10316), 5034 states have internal predecessors, (10316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 10316 transitions. [2022-03-15 13:21:33,389 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 10316 transitions. Word has length 99 [2022-03-15 13:21:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:21:33,389 INFO L470 AbstractCegarLoop]: Abstraction has 5035 states and 10316 transitions. [2022-03-15 13:21:33,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:33,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 10316 transitions. [2022-03-15 13:21:33,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:21:33,393 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:21:33,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:21:33,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-15 13:21:33,394 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:21:33,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:21:33,394 INFO L85 PathProgramCache]: Analyzing trace with hash -502418461, now seen corresponding path program 2 times [2022-03-15 13:21:33,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:21:33,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378952605] [2022-03-15 13:21:33,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:21:33,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:21:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:21:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:21:34,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:21:34,197 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378952605] [2022-03-15 13:21:34,197 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378952605] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:21:34,197 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:21:34,197 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:21:34,197 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571607847] [2022-03-15 13:21:34,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:21:34,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:21:34,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:21:34,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:21:34,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:21:34,198 INFO L87 Difference]: Start difference. First operand 5035 states and 10316 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:39,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:21:39,101 INFO L93 Difference]: Finished difference Result 7775 states and 15958 transitions. [2022-03-15 13:21:39,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:21:39,101 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:21:39,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:21:39,111 INFO L225 Difference]: With dead ends: 7775 [2022-03-15 13:21:39,111 INFO L226 Difference]: Without dead ends: 7775 [2022-03-15 13:21:39,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1067, Invalid=5095, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:21:39,117 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1745 mSDsluCounter, 9266 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 9846 SdHoareTripleChecker+Invalid, 3327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:21:39,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1745 Valid, 9846 Invalid, 3327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:21:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7775 states. [2022-03-15 13:21:39,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7775 to 5095. [2022-03-15 13:21:39,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5092 states have (on average 2.0498821681068344) internal successors, (10438), 5094 states have internal predecessors, (10438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:39,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 10438 transitions. [2022-03-15 13:21:39,199 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 10438 transitions. Word has length 99 [2022-03-15 13:21:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:21:39,200 INFO L470 AbstractCegarLoop]: Abstraction has 5095 states and 10438 transitions. [2022-03-15 13:21:39,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 10438 transitions. [2022-03-15 13:21:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:21:39,204 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:21:39,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:21:39,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-15 13:21:39,204 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:21:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:21:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash 704750963, now seen corresponding path program 3 times [2022-03-15 13:21:39,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:21:39,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76143054] [2022-03-15 13:21:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:21:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:21:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:21:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:21:40,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:21:40,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76143054] [2022-03-15 13:21:40,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76143054] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:21:40,034 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:21:40,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:21:40,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946084938] [2022-03-15 13:21:40,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:21:40,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:21:40,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:21:40,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:21:40,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:21:40,035 INFO L87 Difference]: Start difference. First operand 5095 states and 10438 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:21:44,709 INFO L93 Difference]: Finished difference Result 6743 states and 13827 transitions. [2022-03-15 13:21:44,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:21:44,710 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:21:44,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:21:44,717 INFO L225 Difference]: With dead ends: 6743 [2022-03-15 13:21:44,718 INFO L226 Difference]: Without dead ends: 6743 [2022-03-15 13:21:44,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=941, Invalid=4609, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:21:44,719 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1601 mSDsluCounter, 9030 mSDsCounter, 0 mSdLazyCounter, 3401 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 9592 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:21:44,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 9592 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3401 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:21:44,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6743 states. [2022-03-15 13:21:44,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6743 to 5095. [2022-03-15 13:21:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5092 states have (on average 2.0498821681068344) internal successors, (10438), 5094 states have internal predecessors, (10438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 10438 transitions. [2022-03-15 13:21:44,787 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 10438 transitions. Word has length 99 [2022-03-15 13:21:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:21:44,787 INFO L470 AbstractCegarLoop]: Abstraction has 5095 states and 10438 transitions. [2022-03-15 13:21:44,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 10438 transitions. [2022-03-15 13:21:44,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:21:44,791 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:21:44,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:21:44,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-15 13:21:44,791 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:21:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:21:44,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1980365383, now seen corresponding path program 4 times [2022-03-15 13:21:44,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:21:44,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209750677] [2022-03-15 13:21:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:21:44,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:21:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:21:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:21:45,622 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:21:45,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209750677] [2022-03-15 13:21:45,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209750677] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:21:45,622 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:21:45,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:21:45,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018198149] [2022-03-15 13:21:45,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:21:45,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:21:45,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:21:45,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:21:45,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:21:45,623 INFO L87 Difference]: Start difference. First operand 5095 states and 10438 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:21:49,595 INFO L93 Difference]: Finished difference Result 6828 states and 14014 transitions. [2022-03-15 13:21:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:21:49,596 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:21:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:21:49,604 INFO L225 Difference]: With dead ends: 6828 [2022-03-15 13:21:49,605 INFO L226 Difference]: Without dead ends: 6828 [2022-03-15 13:21:49,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:21:49,606 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1707 mSDsluCounter, 9575 mSDsCounter, 0 mSdLazyCounter, 3777 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 10127 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:21:49,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1707 Valid, 10127 Invalid, 3813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3777 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:21:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6828 states. [2022-03-15 13:21:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6828 to 5112. [2022-03-15 13:21:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5112 states, 5109 states have (on average 2.0497161871207674) internal successors, (10472), 5111 states have internal predecessors, (10472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 10472 transitions. [2022-03-15 13:21:49,664 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 10472 transitions. Word has length 99 [2022-03-15 13:21:49,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:21:49,665 INFO L470 AbstractCegarLoop]: Abstraction has 5112 states and 10472 transitions. [2022-03-15 13:21:49,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:49,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 10472 transitions. [2022-03-15 13:21:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:21:49,668 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:21:49,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:21:49,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-15 13:21:49,669 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:21:49,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:21:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash 132152027, now seen corresponding path program 5 times [2022-03-15 13:21:49,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:21:49,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816289398] [2022-03-15 13:21:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:21:49,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:21:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:21:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:21:50,790 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:21:50,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816289398] [2022-03-15 13:21:50,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816289398] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:21:50,791 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:21:50,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-03-15 13:21:50,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726841168] [2022-03-15 13:21:50,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:21:50,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 13:21:50,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:21:50,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 13:21:50,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 13:21:50,792 INFO L87 Difference]: Start difference. First operand 5112 states and 10472 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:55,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:21:55,914 INFO L93 Difference]: Finished difference Result 7552 states and 15506 transitions. [2022-03-15 13:21:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 13:21:55,914 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:21:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:21:55,922 INFO L225 Difference]: With dead ends: 7552 [2022-03-15 13:21:55,922 INFO L226 Difference]: Without dead ends: 7552 [2022-03-15 13:21:55,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1131, Invalid=5675, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 13:21:55,924 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 2038 mSDsluCounter, 9992 mSDsCounter, 0 mSdLazyCounter, 4120 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 10547 SdHoareTripleChecker+Invalid, 4168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:21:55,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 10547 Invalid, 4168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 4120 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:21:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2022-03-15 13:21:55,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 5411. [2022-03-15 13:21:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5411 states, 5408 states have (on average 2.0536242603550297) internal successors, (11106), 5410 states have internal predecessors, (11106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 11106 transitions. [2022-03-15 13:21:55,982 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 11106 transitions. Word has length 99 [2022-03-15 13:21:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:21:55,982 INFO L470 AbstractCegarLoop]: Abstraction has 5411 states and 11106 transitions. [2022-03-15 13:21:55,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:21:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 11106 transitions. [2022-03-15 13:21:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:21:55,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:21:55,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:21:55,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-15 13:21:55,987 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:21:55,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:21:55,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1234218007, now seen corresponding path program 6 times [2022-03-15 13:21:55,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:21:55,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030200461] [2022-03-15 13:21:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:21:55,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:21:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:21:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:21:56,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:21:56,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030200461] [2022-03-15 13:21:56,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030200461] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:21:56,839 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:21:56,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:21:56,839 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268330112] [2022-03-15 13:21:56,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:21:56,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:21:56,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:21:56,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:21:56,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:21:56,840 INFO L87 Difference]: Start difference. First operand 5411 states and 11106 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:01,403 INFO L93 Difference]: Finished difference Result 8331 states and 17112 transitions. [2022-03-15 13:22:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:22:01,403 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:01,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:01,412 INFO L225 Difference]: With dead ends: 8331 [2022-03-15 13:22:01,412 INFO L226 Difference]: Without dead ends: 8331 [2022-03-15 13:22:01,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:22:01,413 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 1574 mSDsluCounter, 9568 mSDsCounter, 0 mSdLazyCounter, 3715 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 10119 SdHoareTripleChecker+Invalid, 3749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:01,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1574 Valid, 10119 Invalid, 3749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3715 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:22:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8331 states. [2022-03-15 13:22:01,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8331 to 5146. [2022-03-15 13:22:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5146 states, 5143 states have (on average 2.0493875170134164) internal successors, (10540), 5145 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 10540 transitions. [2022-03-15 13:22:01,472 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 10540 transitions. Word has length 99 [2022-03-15 13:22:01,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:01,473 INFO L470 AbstractCegarLoop]: Abstraction has 5146 states and 10540 transitions. [2022-03-15 13:22:01,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 10540 transitions. [2022-03-15 13:22:01,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:01,476 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:01,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:01,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-15 13:22:01,477 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:01,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:01,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1855634331, now seen corresponding path program 7 times [2022-03-15 13:22:01,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:01,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118422547] [2022-03-15 13:22:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:01,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:02,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:02,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118422547] [2022-03-15 13:22:02,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118422547] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:02,311 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:02,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:22:02,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92723478] [2022-03-15 13:22:02,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:02,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:22:02,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:02,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:22:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:22:02,312 INFO L87 Difference]: Start difference. First operand 5146 states and 10540 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:06,390 INFO L93 Difference]: Finished difference Result 6964 states and 14286 transitions. [2022-03-15 13:22:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:22:06,390 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:06,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:06,397 INFO L225 Difference]: With dead ends: 6964 [2022-03-15 13:22:06,397 INFO L226 Difference]: Without dead ends: 6964 [2022-03-15 13:22:06,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=961, Invalid=4739, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:22:06,398 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1684 mSDsluCounter, 9282 mSDsCounter, 0 mSdLazyCounter, 3639 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 9837 SdHoareTripleChecker+Invalid, 3681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:06,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 9837 Invalid, 3681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3639 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:22:06,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2022-03-15 13:22:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 5197. [2022-03-15 13:22:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5194 states have (on average 2.0489025798998846) internal successors, (10642), 5196 states have internal predecessors, (10642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 10642 transitions. [2022-03-15 13:22:06,450 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 10642 transitions. Word has length 99 [2022-03-15 13:22:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:06,450 INFO L470 AbstractCegarLoop]: Abstraction has 5197 states and 10642 transitions. [2022-03-15 13:22:06,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:06,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 10642 transitions. [2022-03-15 13:22:06,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:06,454 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:06,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:06,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-15 13:22:06,454 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:06,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:06,454 INFO L85 PathProgramCache]: Analyzing trace with hash 627083385, now seen corresponding path program 8 times [2022-03-15 13:22:06,455 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:06,455 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940170841] [2022-03-15 13:22:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:06,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:07,090 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:07,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940170841] [2022-03-15 13:22:07,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940170841] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:07,091 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:07,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:22:07,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438126407] [2022-03-15 13:22:07,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:07,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:22:07,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:07,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:22:07,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:22:07,092 INFO L87 Difference]: Start difference. First operand 5197 states and 10642 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:10,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:10,542 INFO L93 Difference]: Finished difference Result 7032 states and 14422 transitions. [2022-03-15 13:22:10,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:22:10,542 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:10,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:10,549 INFO L225 Difference]: With dead ends: 7032 [2022-03-15 13:22:10,549 INFO L226 Difference]: Without dead ends: 7032 [2022-03-15 13:22:10,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=961, Invalid=4739, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:22:10,550 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1603 mSDsluCounter, 9419 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 9976 SdHoareTripleChecker+Invalid, 3610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:10,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 9976 Invalid, 3610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:22:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7032 states. [2022-03-15 13:22:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7032 to 5214. [2022-03-15 13:22:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5211 states have (on average 2.0487430435616965) internal successors, (10676), 5213 states have internal predecessors, (10676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:10,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 10676 transitions. [2022-03-15 13:22:10,600 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 10676 transitions. Word has length 99 [2022-03-15 13:22:10,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:10,600 INFO L470 AbstractCegarLoop]: Abstraction has 5214 states and 10676 transitions. [2022-03-15 13:22:10,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 10676 transitions. [2022-03-15 13:22:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:10,604 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:10,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:10,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-15 13:22:10,604 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash 201193627, now seen corresponding path program 9 times [2022-03-15 13:22:10,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:10,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975895277] [2022-03-15 13:22:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:11,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:11,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975895277] [2022-03-15 13:22:11,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975895277] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:11,678 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:11,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-03-15 13:22:11,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651717824] [2022-03-15 13:22:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:11,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 13:22:11,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 13:22:11,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:22:11,679 INFO L87 Difference]: Start difference. First operand 5214 states and 10676 transitions. Second operand has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:17,427 INFO L93 Difference]: Finished difference Result 8102 states and 16650 transitions. [2022-03-15 13:22:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-15 13:22:17,427 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:17,436 INFO L225 Difference]: With dead ends: 8102 [2022-03-15 13:22:17,436 INFO L226 Difference]: Without dead ends: 8102 [2022-03-15 13:22:17,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1404, Invalid=7152, Unknown=0, NotChecked=0, Total=8556 [2022-03-15 13:22:17,437 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1944 mSDsluCounter, 11748 mSDsCounter, 0 mSdLazyCounter, 4934 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 12310 SdHoareTripleChecker+Invalid, 4983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 4934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:17,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1944 Valid, 12310 Invalid, 4983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 4934 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 13:22:17,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8102 states. [2022-03-15 13:22:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8102 to 5598. [2022-03-15 13:22:17,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5598 states, 5595 states have (on average 2.05183199285076) internal successors, (11480), 5597 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 11480 transitions. [2022-03-15 13:22:17,501 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 11480 transitions. Word has length 99 [2022-03-15 13:22:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:17,501 INFO L470 AbstractCegarLoop]: Abstraction has 5598 states and 11480 transitions. [2022-03-15 13:22:17,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 11480 transitions. [2022-03-15 13:22:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:17,506 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:17,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:17,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-15 13:22:17,506 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:17,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:17,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1303259607, now seen corresponding path program 10 times [2022-03-15 13:22:17,506 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:17,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385701480] [2022-03-15 13:22:17,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:17,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:18,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:18,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385701480] [2022-03-15 13:22:18,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385701480] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:18,223 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:18,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:22:18,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520552956] [2022-03-15 13:22:18,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:18,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:22:18,223 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:18,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:22:18,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:22:18,224 INFO L87 Difference]: Start difference. First operand 5598 states and 11480 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:22,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:22,589 INFO L93 Difference]: Finished difference Result 8518 states and 17486 transitions. [2022-03-15 13:22:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:22:22,590 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:22,598 INFO L225 Difference]: With dead ends: 8518 [2022-03-15 13:22:22,598 INFO L226 Difference]: Without dead ends: 8518 [2022-03-15 13:22:22,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:22:22,599 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1574 mSDsluCounter, 9259 mSDsCounter, 0 mSdLazyCounter, 3468 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 9817 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:22,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1574 Valid, 9817 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3468 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:22:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2022-03-15 13:22:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 5231. [2022-03-15 13:22:22,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5228 states have (on average 2.04858454475899) internal successors, (10710), 5230 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 10710 transitions. [2022-03-15 13:22:22,653 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 10710 transitions. Word has length 99 [2022-03-15 13:22:22,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:22,653 INFO L470 AbstractCegarLoop]: Abstraction has 5231 states and 10710 transitions. [2022-03-15 13:22:22,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:22,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 10710 transitions. [2022-03-15 13:22:22,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:22,657 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:22,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:22,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-15 13:22:22,664 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:22,664 INFO L85 PathProgramCache]: Analyzing trace with hash -234690567, now seen corresponding path program 11 times [2022-03-15 13:22:22,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:22,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662039276] [2022-03-15 13:22:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:22,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:23,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:23,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662039276] [2022-03-15 13:22:23,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662039276] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:23,418 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:23,418 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:22:23,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641483361] [2022-03-15 13:22:23,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:23,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:22:23,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:23,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:22:23,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:22:23,421 INFO L87 Difference]: Start difference. First operand 5231 states and 10710 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:27,270 INFO L93 Difference]: Finished difference Result 7134 states and 14626 transitions. [2022-03-15 13:22:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:22:27,270 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:27,278 INFO L225 Difference]: With dead ends: 7134 [2022-03-15 13:22:27,278 INFO L226 Difference]: Without dead ends: 7134 [2022-03-15 13:22:27,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:22:27,279 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1533 mSDsluCounter, 10051 mSDsCounter, 0 mSdLazyCounter, 3844 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 10611 SdHoareTripleChecker+Invalid, 3877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:27,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 10611 Invalid, 3877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3844 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:22:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2022-03-15 13:22:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 5282. [2022-03-15 13:22:27,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5279 states have (on average 2.048115173328282) internal successors, (10812), 5281 states have internal predecessors, (10812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 10812 transitions. [2022-03-15 13:22:27,338 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 10812 transitions. Word has length 99 [2022-03-15 13:22:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:27,338 INFO L470 AbstractCegarLoop]: Abstraction has 5282 states and 10812 transitions. [2022-03-15 13:22:27,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 10812 transitions. [2022-03-15 13:22:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:27,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:27,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:27,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-15 13:22:27,342 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1242529499, now seen corresponding path program 12 times [2022-03-15 13:22:27,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:27,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701483133] [2022-03-15 13:22:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:28,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:28,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701483133] [2022-03-15 13:22:28,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701483133] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:28,210 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:28,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:22:28,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575787796] [2022-03-15 13:22:28,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:28,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:22:28,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:28,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:22:28,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:22:28,210 INFO L87 Difference]: Start difference. First operand 5282 states and 10812 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:31,850 INFO L93 Difference]: Finished difference Result 6845 states and 14031 transitions. [2022-03-15 13:22:31,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:22:31,851 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:31,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:31,858 INFO L225 Difference]: With dead ends: 6845 [2022-03-15 13:22:31,858 INFO L226 Difference]: Without dead ends: 6845 [2022-03-15 13:22:31,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=961, Invalid=4739, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:22:31,859 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1552 mSDsluCounter, 8872 mSDsCounter, 0 mSdLazyCounter, 3151 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 9437 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:31,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 9437 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3151 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:22:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2022-03-15 13:22:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 5112. [2022-03-15 13:22:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5112 states, 5109 states have (on average 2.0497161871207674) internal successors, (10472), 5111 states have internal predecessors, (10472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 10472 transitions. [2022-03-15 13:22:31,910 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 10472 transitions. Word has length 99 [2022-03-15 13:22:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:31,910 INFO L470 AbstractCegarLoop]: Abstraction has 5112 states and 10472 transitions. [2022-03-15 13:22:31,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 10472 transitions. [2022-03-15 13:22:31,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:31,914 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:31,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:31,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-15 13:22:31,914 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:31,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:31,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1850403261, now seen corresponding path program 13 times [2022-03-15 13:22:31,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:31,915 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501680039] [2022-03-15 13:22:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:31,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:32,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:32,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501680039] [2022-03-15 13:22:32,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501680039] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:32,845 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:32,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:22:32,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535747031] [2022-03-15 13:22:32,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:32,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:22:32,846 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:32,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:22:32,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:22:32,846 INFO L87 Difference]: Start difference. First operand 5112 states and 10472 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:36,024 INFO L93 Difference]: Finished difference Result 7360 states and 15119 transitions. [2022-03-15 13:22:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:22:36,025 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:36,035 INFO L225 Difference]: With dead ends: 7360 [2022-03-15 13:22:36,035 INFO L226 Difference]: Without dead ends: 7360 [2022-03-15 13:22:36,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:22:36,036 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1499 mSDsluCounter, 9184 mSDsCounter, 0 mSdLazyCounter, 3366 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 9742 SdHoareTripleChecker+Invalid, 3399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:36,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 9742 Invalid, 3399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3366 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 13:22:36,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2022-03-15 13:22:36,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 5137. [2022-03-15 13:22:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5134 states have (on average 2.0500584339696144) internal successors, (10525), 5136 states have internal predecessors, (10525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:36,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 10525 transitions. [2022-03-15 13:22:36,102 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 10525 transitions. Word has length 99 [2022-03-15 13:22:36,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:36,102 INFO L470 AbstractCegarLoop]: Abstraction has 5137 states and 10525 transitions. [2022-03-15 13:22:36,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:36,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 10525 transitions. [2022-03-15 13:22:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:36,107 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:36,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:36,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-15 13:22:36,107 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:36,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:36,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1757759749, now seen corresponding path program 14 times [2022-03-15 13:22:36,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:36,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690027769] [2022-03-15 13:22:36,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:36,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:36,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:36,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690027769] [2022-03-15 13:22:36,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690027769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:36,728 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:36,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:22:36,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6032001] [2022-03-15 13:22:36,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:36,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:22:36,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:22:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:22:36,729 INFO L87 Difference]: Start difference. First operand 5137 states and 10525 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:40,832 INFO L93 Difference]: Finished difference Result 9400 states and 19327 transitions. [2022-03-15 13:22:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:22:40,832 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:40,842 INFO L225 Difference]: With dead ends: 9400 [2022-03-15 13:22:40,842 INFO L226 Difference]: Without dead ends: 9400 [2022-03-15 13:22:40,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:22:40,843 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1691 mSDsluCounter, 10201 mSDsCounter, 0 mSdLazyCounter, 3738 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 10805 SdHoareTripleChecker+Invalid, 3773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:40,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1691 Valid, 10805 Invalid, 3773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3738 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:22:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9400 states. [2022-03-15 13:22:40,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9400 to 5139. [2022-03-15 13:22:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5136 states have (on average 2.050038940809969) internal successors, (10529), 5138 states have internal predecessors, (10529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 10529 transitions. [2022-03-15 13:22:40,906 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 10529 transitions. Word has length 99 [2022-03-15 13:22:40,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:40,906 INFO L470 AbstractCegarLoop]: Abstraction has 5139 states and 10529 transitions. [2022-03-15 13:22:40,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 10529 transitions. [2022-03-15 13:22:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:40,926 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:40,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:40,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-15 13:22:40,926 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:40,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:40,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1330038123, now seen corresponding path program 15 times [2022-03-15 13:22:40,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:40,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319781446] [2022-03-15 13:22:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:40,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:41,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:41,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:41,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319781446] [2022-03-15 13:22:41,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319781446] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:41,721 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:41,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:22:41,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294529912] [2022-03-15 13:22:41,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:41,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:22:41,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:41,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:22:41,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:22:41,722 INFO L87 Difference]: Start difference. First operand 5139 states and 10529 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:45,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:45,748 INFO L93 Difference]: Finished difference Result 7442 states and 15285 transitions. [2022-03-15 13:22:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:22:45,748 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:45,756 INFO L225 Difference]: With dead ends: 7442 [2022-03-15 13:22:45,757 INFO L226 Difference]: Without dead ends: 7442 [2022-03-15 13:22:45,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:22:45,757 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1766 mSDsluCounter, 8667 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 9239 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:45,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1766 Valid, 9239 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:22:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7442 states. [2022-03-15 13:22:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7442 to 5121. [2022-03-15 13:22:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 5118 states have (on average 2.0498241500586167) internal successors, (10491), 5120 states have internal predecessors, (10491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 10491 transitions. [2022-03-15 13:22:45,811 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 10491 transitions. Word has length 99 [2022-03-15 13:22:45,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:45,811 INFO L470 AbstractCegarLoop]: Abstraction has 5121 states and 10491 transitions. [2022-03-15 13:22:45,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:45,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 10491 transitions. [2022-03-15 13:22:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:45,816 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:45,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:45,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-15 13:22:45,816 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:45,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:45,816 INFO L85 PathProgramCache]: Analyzing trace with hash 969706245, now seen corresponding path program 16 times [2022-03-15 13:22:45,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:45,817 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952975630] [2022-03-15 13:22:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:45,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:46,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:46,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952975630] [2022-03-15 13:22:46,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952975630] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:46,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:46,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:22:46,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406029430] [2022-03-15 13:22:46,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:46,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:22:46,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:46,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:22:46,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:22:46,463 INFO L87 Difference]: Start difference. First operand 5121 states and 10491 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:50,286 INFO L93 Difference]: Finished difference Result 8427 states and 17291 transitions. [2022-03-15 13:22:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:22:50,287 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:50,296 INFO L225 Difference]: With dead ends: 8427 [2022-03-15 13:22:50,297 INFO L226 Difference]: Without dead ends: 8427 [2022-03-15 13:22:50,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1166, Invalid=5314, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 13:22:50,297 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1929 mSDsluCounter, 10617 mSDsCounter, 0 mSdLazyCounter, 3826 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 11214 SdHoareTripleChecker+Invalid, 3865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:50,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 11214 Invalid, 3865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3826 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:22:50,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8427 states. [2022-03-15 13:22:50,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8427 to 5228. [2022-03-15 13:22:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5225 states have (on average 2.049377990430622) internal successors, (10708), 5227 states have internal predecessors, (10708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 10708 transitions. [2022-03-15 13:22:50,371 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 10708 transitions. Word has length 99 [2022-03-15 13:22:50,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:50,371 INFO L470 AbstractCegarLoop]: Abstraction has 5228 states and 10708 transitions. [2022-03-15 13:22:50,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 10708 transitions. [2022-03-15 13:22:50,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:50,376 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:50,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:50,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-15 13:22:50,376 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:50,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:50,376 INFO L85 PathProgramCache]: Analyzing trace with hash 948513173, now seen corresponding path program 17 times [2022-03-15 13:22:50,376 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:50,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566685785] [2022-03-15 13:22:50,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:50,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:51,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:51,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566685785] [2022-03-15 13:22:51,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566685785] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:51,125 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:51,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:22:51,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067516706] [2022-03-15 13:22:51,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:51,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:22:51,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:51,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:22:51,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:22:51,126 INFO L87 Difference]: Start difference. First operand 5228 states and 10708 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:54,816 INFO L93 Difference]: Finished difference Result 8395 states and 17222 transitions. [2022-03-15 13:22:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:22:54,816 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:54,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:54,825 INFO L225 Difference]: With dead ends: 8395 [2022-03-15 13:22:54,825 INFO L226 Difference]: Without dead ends: 8395 [2022-03-15 13:22:54,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1060, Invalid=5102, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:22:54,825 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1792 mSDsluCounter, 10124 mSDsCounter, 0 mSdLazyCounter, 3713 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 10703 SdHoareTripleChecker+Invalid, 3755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:54,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1792 Valid, 10703 Invalid, 3755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3713 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:22:54,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8395 states. [2022-03-15 13:22:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8395 to 5230. [2022-03-15 13:22:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 5227 states have (on average 2.049359096996365) internal successors, (10712), 5229 states have internal predecessors, (10712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 10712 transitions. [2022-03-15 13:22:54,879 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 10712 transitions. Word has length 99 [2022-03-15 13:22:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:54,879 INFO L470 AbstractCegarLoop]: Abstraction has 5230 states and 10712 transitions. [2022-03-15 13:22:54,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 10712 transitions. [2022-03-15 13:22:54,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:54,883 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:54,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:54,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-15 13:22:54,883 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash -885464299, now seen corresponding path program 18 times [2022-03-15 13:22:54,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:54,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040865501] [2022-03-15 13:22:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:54,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:22:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:22:55,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:22:55,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040865501] [2022-03-15 13:22:55,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040865501] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:22:55,532 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:22:55,532 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-03-15 13:22:55,532 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937309152] [2022-03-15 13:22:55,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:22:55,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 13:22:55,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:22:55,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 13:22:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-03-15 13:22:55,533 INFO L87 Difference]: Start difference. First operand 5230 states and 10712 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:22:59,847 INFO L93 Difference]: Finished difference Result 7350 states and 15068 transitions. [2022-03-15 13:22:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 13:22:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:22:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:22:59,856 INFO L225 Difference]: With dead ends: 7350 [2022-03-15 13:22:59,856 INFO L226 Difference]: Without dead ends: 7350 [2022-03-15 13:22:59,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=900, Invalid=4356, Unknown=0, NotChecked=0, Total=5256 [2022-03-15 13:22:59,859 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 1520 mSDsluCounter, 9060 mSDsCounter, 0 mSdLazyCounter, 3396 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 9600 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:22:59,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 9600 Invalid, 3431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3396 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:22:59,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2022-03-15 13:22:59,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 5250. [2022-03-15 13:22:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 5247 states have (on average 2.0491709548313324) internal successors, (10752), 5249 states have internal predecessors, (10752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 10752 transitions. [2022-03-15 13:22:59,926 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 10752 transitions. Word has length 99 [2022-03-15 13:22:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:22:59,926 INFO L470 AbstractCegarLoop]: Abstraction has 5250 states and 10752 transitions. [2022-03-15 13:22:59,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:22:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 10752 transitions. [2022-03-15 13:22:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:22:59,929 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:22:59,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:22:59,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-15 13:22:59,930 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:22:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:22:59,931 INFO L85 PathProgramCache]: Analyzing trace with hash -917579705, now seen corresponding path program 19 times [2022-03-15 13:22:59,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:22:59,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106161992] [2022-03-15 13:22:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:22:59,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:22:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:00,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:00,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106161992] [2022-03-15 13:23:00,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106161992] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:00,946 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:00,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-03-15 13:23:00,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227114550] [2022-03-15 13:23:00,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:00,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 13:23:00,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:00,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 13:23:00,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1168, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 13:23:00,947 INFO L87 Difference]: Start difference. First operand 5250 states and 10752 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:05,015 INFO L93 Difference]: Finished difference Result 8278 states and 17019 transitions. [2022-03-15 13:23:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 13:23:05,015 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:23:05,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:05,024 INFO L225 Difference]: With dead ends: 8278 [2022-03-15 13:23:05,024 INFO L226 Difference]: Without dead ends: 8278 [2022-03-15 13:23:05,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1134, Invalid=5672, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 13:23:05,026 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1809 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 3670 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 9728 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:05,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1809 Valid, 9728 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3670 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:23:05,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8278 states. [2022-03-15 13:23:05,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8278 to 5561. [2022-03-15 13:23:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5561 states, 5558 states have (on average 2.056315221302627) internal successors, (11429), 5560 states have internal predecessors, (11429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:05,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 11429 transitions. [2022-03-15 13:23:05,094 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 11429 transitions. Word has length 99 [2022-03-15 13:23:05,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:05,095 INFO L470 AbstractCegarLoop]: Abstraction has 5561 states and 11429 transitions. [2022-03-15 13:23:05,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:05,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 11429 transitions. [2022-03-15 13:23:05,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:23:05,100 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:05,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:05,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-15 13:23:05,100 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:23:05,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:05,101 INFO L85 PathProgramCache]: Analyzing trace with hash 184486275, now seen corresponding path program 20 times [2022-03-15 13:23:05,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:05,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486234619] [2022-03-15 13:23:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:05,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:05,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:05,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486234619] [2022-03-15 13:23:05,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486234619] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:05,950 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:05,950 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:23:05,950 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300678527] [2022-03-15 13:23:05,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:05,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:23:05,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:05,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:23:05,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:23:05,951 INFO L87 Difference]: Start difference. First operand 5561 states and 11429 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:10,748 INFO L93 Difference]: Finished difference Result 9074 states and 18659 transitions. [2022-03-15 13:23:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:23:10,748 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:23:10,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:10,757 INFO L225 Difference]: With dead ends: 9074 [2022-03-15 13:23:10,758 INFO L226 Difference]: Without dead ends: 9074 [2022-03-15 13:23:10,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:23:10,758 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1549 mSDsluCounter, 9934 mSDsCounter, 0 mSdLazyCounter, 3873 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 10497 SdHoareTripleChecker+Invalid, 3907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:10,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 10497 Invalid, 3907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3873 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:23:10,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2022-03-15 13:23:10,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 5268. [2022-03-15 13:23:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 5265 states have (on average 2.049382716049383) internal successors, (10790), 5267 states have internal predecessors, (10790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 10790 transitions. [2022-03-15 13:23:10,819 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 10790 transitions. Word has length 99 [2022-03-15 13:23:10,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:10,819 INFO L470 AbstractCegarLoop]: Abstraction has 5268 states and 10790 transitions. [2022-03-15 13:23:10,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:10,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 10790 transitions. [2022-03-15 13:23:10,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:23:10,824 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:10,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:10,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-15 13:23:10,824 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:23:10,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1010223217, now seen corresponding path program 21 times [2022-03-15 13:23:10,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:10,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830044414] [2022-03-15 13:23:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:10,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:11,662 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:11,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830044414] [2022-03-15 13:23:11,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830044414] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:11,662 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:11,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:23:11,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830684637] [2022-03-15 13:23:11,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:11,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:23:11,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:11,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:23:11,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:23:11,663 INFO L87 Difference]: Start difference. First operand 5268 states and 10790 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:16,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:16,366 INFO L93 Difference]: Finished difference Result 9569 states and 19666 transitions. [2022-03-15 13:23:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:23:16,366 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:23:16,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:16,385 INFO L225 Difference]: With dead ends: 9569 [2022-03-15 13:23:16,386 INFO L226 Difference]: Without dead ends: 9569 [2022-03-15 13:23:16,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1066, Invalid=5096, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:23:16,386 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 1746 mSDsluCounter, 11442 mSDsCounter, 0 mSdLazyCounter, 4250 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1746 SdHoareTripleChecker+Valid, 12051 SdHoareTripleChecker+Invalid, 4289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:16,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1746 Valid, 12051 Invalid, 4289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4250 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:23:16,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9569 states. [2022-03-15 13:23:16,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9569 to 5270. [2022-03-15 13:23:16,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5267 states have (on average 2.0493639643060564) internal successors, (10794), 5269 states have internal predecessors, (10794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 10794 transitions. [2022-03-15 13:23:16,490 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 10794 transitions. Word has length 99 [2022-03-15 13:23:16,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:16,490 INFO L470 AbstractCegarLoop]: Abstraction has 5270 states and 10794 transitions. [2022-03-15 13:23:16,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 10794 transitions. [2022-03-15 13:23:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:23:16,494 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:16,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:16,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-15 13:23:16,494 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:23:16,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash 196946207, now seen corresponding path program 22 times [2022-03-15 13:23:16,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:16,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193322203] [2022-03-15 13:23:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:16,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:17,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:17,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193322203] [2022-03-15 13:23:17,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193322203] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:17,189 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:17,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-03-15 13:23:17,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757139200] [2022-03-15 13:23:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:17,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 13:23:17,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 13:23:17,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-03-15 13:23:17,190 INFO L87 Difference]: Start difference. First operand 5270 states and 10794 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:20,414 INFO L93 Difference]: Finished difference Result 7679 states and 15760 transitions. [2022-03-15 13:23:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 13:23:20,415 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:23:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:20,426 INFO L225 Difference]: With dead ends: 7679 [2022-03-15 13:23:20,426 INFO L226 Difference]: Without dead ends: 7679 [2022-03-15 13:23:20,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=902, Invalid=4354, Unknown=0, NotChecked=0, Total=5256 [2022-03-15 13:23:20,427 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1594 mSDsluCounter, 9525 mSDsCounter, 0 mSdLazyCounter, 3529 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 10088 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:20,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1594 Valid, 10088 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3529 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:23:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7679 states. [2022-03-15 13:23:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7679 to 5252. [2022-03-15 13:23:20,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5252 states, 5249 states have (on average 2.0491522194703755) internal successors, (10756), 5251 states have internal predecessors, (10756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 10756 transitions. [2022-03-15 13:23:20,481 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 10756 transitions. Word has length 99 [2022-03-15 13:23:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:20,482 INFO L470 AbstractCegarLoop]: Abstraction has 5252 states and 10756 transitions. [2022-03-15 13:23:20,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 10756 transitions. [2022-03-15 13:23:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:23:20,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:20,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:20,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-15 13:23:20,486 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:23:20,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:20,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1806797157, now seen corresponding path program 23 times [2022-03-15 13:23:20,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:20,486 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413253810] [2022-03-15 13:23:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:20,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:21,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:21,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413253810] [2022-03-15 13:23:21,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413253810] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:21,191 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:21,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:23:21,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127551673] [2022-03-15 13:23:21,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:21,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:23:21,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:21,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:23:21,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:23:21,193 INFO L87 Difference]: Start difference. First operand 5252 states and 10756 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:24,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:24,658 INFO L93 Difference]: Finished difference Result 7366 states and 15115 transitions. [2022-03-15 13:23:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:23:24,658 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:23:24,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:24,668 INFO L225 Difference]: With dead ends: 7366 [2022-03-15 13:23:24,668 INFO L226 Difference]: Without dead ends: 7366 [2022-03-15 13:23:24,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:23:24,669 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1523 mSDsluCounter, 9974 mSDsCounter, 0 mSdLazyCounter, 3893 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 10535 SdHoareTripleChecker+Invalid, 3927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:24,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 10535 Invalid, 3927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3893 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:23:24,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7366 states. [2022-03-15 13:23:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7366 to 5250. [2022-03-15 13:23:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 5247 states have (on average 2.0491709548313324) internal successors, (10752), 5249 states have internal predecessors, (10752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 10752 transitions. [2022-03-15 13:23:24,740 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 10752 transitions. Word has length 99 [2022-03-15 13:23:24,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:24,740 INFO L470 AbstractCegarLoop]: Abstraction has 5250 states and 10752 transitions. [2022-03-15 13:23:24,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 10752 transitions. [2022-03-15 13:23:24,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:23:24,744 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:24,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:24,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-15 13:23:24,744 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:23:24,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:24,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1671774703, now seen corresponding path program 24 times [2022-03-15 13:23:24,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:24,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107823038] [2022-03-15 13:23:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:24,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:25,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:25,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107823038] [2022-03-15 13:23:25,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107823038] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:25,599 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:25,599 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:23:25,599 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910696931] [2022-03-15 13:23:25,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:25,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:23:25,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:25,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:23:25,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:23:25,600 INFO L87 Difference]: Start difference. First operand 5250 states and 10752 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:30,285 INFO L93 Difference]: Finished difference Result 7702 states and 15825 transitions. [2022-03-15 13:23:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:23:30,285 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:23:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:30,296 INFO L225 Difference]: With dead ends: 7702 [2022-03-15 13:23:30,297 INFO L226 Difference]: Without dead ends: 7702 [2022-03-15 13:23:30,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:23:30,298 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1734 mSDsluCounter, 9328 mSDsCounter, 0 mSdLazyCounter, 3655 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 9891 SdHoareTripleChecker+Invalid, 3697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:30,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1734 Valid, 9891 Invalid, 3697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3655 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:23:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7702 states. [2022-03-15 13:23:30,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7702 to 5408. [2022-03-15 13:23:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 5405 states have (on average 2.0512488436632745) internal successors, (11087), 5407 states have internal predecessors, (11087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:30,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 11087 transitions. [2022-03-15 13:23:30,368 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 11087 transitions. Word has length 99 [2022-03-15 13:23:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:30,369 INFO L470 AbstractCegarLoop]: Abstraction has 5408 states and 11087 transitions. [2022-03-15 13:23:30,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:30,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 11087 transitions. [2022-03-15 13:23:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:23:30,373 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:30,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:30,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-15 13:23:30,373 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:23:30,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:30,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1764418215, now seen corresponding path program 25 times [2022-03-15 13:23:30,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:30,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444925037] [2022-03-15 13:23:30,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:30,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:31,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:31,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444925037] [2022-03-15 13:23:31,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444925037] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:31,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:31,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:23:31,165 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392709897] [2022-03-15 13:23:31,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:31,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:23:31,165 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:23:31,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:23:31,166 INFO L87 Difference]: Start difference. First operand 5408 states and 11087 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:36,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:36,476 INFO L93 Difference]: Finished difference Result 9672 states and 19876 transitions. [2022-03-15 13:23:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:23:36,476 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:23:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:36,486 INFO L225 Difference]: With dead ends: 9672 [2022-03-15 13:23:36,487 INFO L226 Difference]: Without dead ends: 9672 [2022-03-15 13:23:36,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1066, Invalid=5096, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:23:36,488 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 1864 mSDsluCounter, 9920 mSDsCounter, 0 mSdLazyCounter, 3775 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 10529 SdHoareTripleChecker+Invalid, 3819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:36,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1864 Valid, 10529 Invalid, 3819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3775 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:23:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9672 states. [2022-03-15 13:23:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9672 to 5410. [2022-03-15 13:23:36,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5410 states, 5407 states have (on average 2.051229887183281) internal successors, (11091), 5409 states have internal predecessors, (11091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 11091 transitions. [2022-03-15 13:23:36,548 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 11091 transitions. Word has length 99 [2022-03-15 13:23:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:36,549 INFO L470 AbstractCegarLoop]: Abstraction has 5410 states and 11091 transitions. [2022-03-15 13:23:36,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 11091 transitions. [2022-03-15 13:23:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:23:36,553 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:36,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:36,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-15 13:23:36,553 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:23:36,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash -557248791, now seen corresponding path program 26 times [2022-03-15 13:23:36,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:36,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705506117] [2022-03-15 13:23:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:37,365 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:37,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705506117] [2022-03-15 13:23:37,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705506117] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:37,365 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:37,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:23:37,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980601560] [2022-03-15 13:23:37,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:37,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:23:37,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:23:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:23:37,366 INFO L87 Difference]: Start difference. First operand 5410 states and 11091 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:42,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:42,213 INFO L93 Difference]: Finished difference Result 7765 states and 15934 transitions. [2022-03-15 13:23:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:23:42,214 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:23:42,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:42,221 INFO L225 Difference]: With dead ends: 7765 [2022-03-15 13:23:42,222 INFO L226 Difference]: Without dead ends: 7765 [2022-03-15 13:23:42,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:23:42,222 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1541 mSDsluCounter, 9385 mSDsCounter, 0 mSdLazyCounter, 3486 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 9962 SdHoareTripleChecker+Invalid, 3521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:42,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 9962 Invalid, 3521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3486 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:23:42,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7765 states. [2022-03-15 13:23:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7765 to 5408. [2022-03-15 13:23:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 5405 states have (on average 2.0512488436632745) internal successors, (11087), 5407 states have internal predecessors, (11087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 11087 transitions. [2022-03-15 13:23:42,282 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 11087 transitions. Word has length 99 [2022-03-15 13:23:42,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:42,283 INFO L470 AbstractCegarLoop]: Abstraction has 5408 states and 11087 transitions. [2022-03-15 13:23:42,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:42,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 11087 transitions. [2022-03-15 13:23:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:23:42,287 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:42,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:42,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-15 13:23:42,287 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:23:42,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:42,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1052602159, now seen corresponding path program 27 times [2022-03-15 13:23:42,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:42,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476383832] [2022-03-15 13:23:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:42,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:43,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:43,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476383832] [2022-03-15 13:23:43,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476383832] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:43,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:43,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:23:43,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411872330] [2022-03-15 13:23:43,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:43,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:23:43,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:43,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:23:43,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:23:43,130 INFO L87 Difference]: Start difference. First operand 5408 states and 11087 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:48,169 INFO L93 Difference]: Finished difference Result 7787 states and 15995 transitions. [2022-03-15 13:23:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:23:48,169 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:23:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:48,177 INFO L225 Difference]: With dead ends: 7787 [2022-03-15 13:23:48,177 INFO L226 Difference]: Without dead ends: 7787 [2022-03-15 13:23:48,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:23:48,178 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1763 mSDsluCounter, 9941 mSDsCounter, 0 mSdLazyCounter, 3869 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 10508 SdHoareTripleChecker+Invalid, 3909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:48,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1763 Valid, 10508 Invalid, 3909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3869 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:23:48,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7787 states. [2022-03-15 13:23:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7787 to 5425. [2022-03-15 13:23:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 5422 states have (on average 2.051088159350793) internal successors, (11121), 5424 states have internal predecessors, (11121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 11121 transitions. [2022-03-15 13:23:48,240 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 11121 transitions. Word has length 99 [2022-03-15 13:23:48,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:48,240 INFO L470 AbstractCegarLoop]: Abstraction has 5425 states and 11121 transitions. [2022-03-15 13:23:48,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 11121 transitions. [2022-03-15 13:23:48,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:23:48,245 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:48,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:48,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-15 13:23:48,245 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:23:48,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:48,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1129847727, now seen corresponding path program 28 times [2022-03-15 13:23:48,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:48,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018524341] [2022-03-15 13:23:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:48,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:49,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:49,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018524341] [2022-03-15 13:23:49,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018524341] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:49,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:49,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:23:49,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165684410] [2022-03-15 13:23:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:49,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:23:49,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:23:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:23:49,108 INFO L87 Difference]: Start difference. First operand 5425 states and 11121 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:53,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:53,836 INFO L93 Difference]: Finished difference Result 7615 states and 15634 transitions. [2022-03-15 13:23:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:23:53,837 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:23:53,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:53,845 INFO L225 Difference]: With dead ends: 7615 [2022-03-15 13:23:53,845 INFO L226 Difference]: Without dead ends: 7615 [2022-03-15 13:23:53,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:23:53,846 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1636 mSDsluCounter, 9148 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 9708 SdHoareTripleChecker+Invalid, 3547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:53,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1636 Valid, 9708 Invalid, 3547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3514 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:23:53,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7615 states. [2022-03-15 13:23:53,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7615 to 5459. [2022-03-15 13:23:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5459 states, 5456 states have (on average 2.0507697947214076) internal successors, (11189), 5458 states have internal predecessors, (11189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:53,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 11189 transitions. [2022-03-15 13:23:53,913 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 11189 transitions. Word has length 99 [2022-03-15 13:23:53,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:53,913 INFO L470 AbstractCegarLoop]: Abstraction has 5459 states and 11189 transitions. [2022-03-15 13:23:53,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:53,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 11189 transitions. [2022-03-15 13:23:53,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:23:53,917 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:53,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:53,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-15 13:23:53,917 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:23:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2006338119, now seen corresponding path program 29 times [2022-03-15 13:23:53,918 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:53,918 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161029774] [2022-03-15 13:23:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:53,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:54,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:54,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161029774] [2022-03-15 13:23:54,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161029774] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:54,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:54,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:23:54,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899406524] [2022-03-15 13:23:54,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:54,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:23:54,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:54,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:23:54,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:23:54,716 INFO L87 Difference]: Start difference. First operand 5459 states and 11189 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:23:59,096 INFO L93 Difference]: Finished difference Result 7968 states and 16376 transitions. [2022-03-15 13:23:59,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:23:59,096 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:23:59,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:23:59,105 INFO L225 Difference]: With dead ends: 7968 [2022-03-15 13:23:59,105 INFO L226 Difference]: Without dead ends: 7968 [2022-03-15 13:23:59,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:23:59,106 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 1685 mSDsluCounter, 9367 mSDsCounter, 0 mSdLazyCounter, 3708 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 9935 SdHoareTripleChecker+Invalid, 3748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:23:59,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1685 Valid, 9935 Invalid, 3748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3708 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:23:59,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2022-03-15 13:23:59,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 5487. [2022-03-15 13:23:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 5484 states have (on average 2.050875273522976) internal successors, (11247), 5486 states have internal predecessors, (11247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 11247 transitions. [2022-03-15 13:23:59,165 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 11247 transitions. Word has length 99 [2022-03-15 13:23:59,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:23:59,165 INFO L470 AbstractCegarLoop]: Abstraction has 5487 states and 11247 transitions. [2022-03-15 13:23:59,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:23:59,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 11247 transitions. [2022-03-15 13:23:59,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:23:59,169 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:23:59,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:23:59,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-15 13:23:59,169 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:23:59,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:23:59,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2098981631, now seen corresponding path program 30 times [2022-03-15 13:23:59,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:23:59,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160886316] [2022-03-15 13:23:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:23:59,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:23:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:23:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:23:59,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:23:59,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160886316] [2022-03-15 13:23:59,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160886316] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:23:59,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:23:59,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:23:59,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466868060] [2022-03-15 13:23:59,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:23:59,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:23:59,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:23:59,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:23:59,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:23:59,871 INFO L87 Difference]: Start difference. First operand 5487 states and 11247 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:03,987 INFO L93 Difference]: Finished difference Result 9938 states and 20427 transitions. [2022-03-15 13:24:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:24:03,988 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:03,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:03,998 INFO L225 Difference]: With dead ends: 9938 [2022-03-15 13:24:03,999 INFO L226 Difference]: Without dead ends: 9938 [2022-03-15 13:24:03,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:24:04,000 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 1639 mSDsluCounter, 10701 mSDsCounter, 0 mSdLazyCounter, 4056 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 11315 SdHoareTripleChecker+Invalid, 4089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:04,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1639 Valid, 11315 Invalid, 4089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4056 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:24:04,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9938 states. [2022-03-15 13:24:04,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9938 to 5489. [2022-03-15 13:24:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5489 states, 5486 states have (on average 2.0508567262121766) internal successors, (11251), 5488 states have internal predecessors, (11251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5489 states to 5489 states and 11251 transitions. [2022-03-15 13:24:04,067 INFO L78 Accepts]: Start accepts. Automaton has 5489 states and 11251 transitions. Word has length 99 [2022-03-15 13:24:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:04,068 INFO L470 AbstractCegarLoop]: Abstraction has 5489 states and 11251 transitions. [2022-03-15 13:24:04,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:04,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5489 states and 11251 transitions. [2022-03-15 13:24:04,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:04,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:04,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:04,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-15 13:24:04,072 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:04,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:04,073 INFO L85 PathProgramCache]: Analyzing trace with hash -891812207, now seen corresponding path program 31 times [2022-03-15 13:24:04,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:04,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993235481] [2022-03-15 13:24:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:04,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:04,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:04,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:04,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993235481] [2022-03-15 13:24:04,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993235481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:04,858 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:04,858 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:24:04,858 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653727000] [2022-03-15 13:24:04,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:04,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:24:04,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:24:04,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:24:04,859 INFO L87 Difference]: Start difference. First operand 5489 states and 11251 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:08,284 INFO L93 Difference]: Finished difference Result 8031 states and 16485 transitions. [2022-03-15 13:24:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:24:08,285 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:08,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:08,293 INFO L225 Difference]: With dead ends: 8031 [2022-03-15 13:24:08,293 INFO L226 Difference]: Without dead ends: 8031 [2022-03-15 13:24:08,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:24:08,294 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1653 mSDsluCounter, 9704 mSDsCounter, 0 mSdLazyCounter, 3753 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 10286 SdHoareTripleChecker+Invalid, 3788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:08,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1653 Valid, 10286 Invalid, 3788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3753 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:24:08,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8031 states. [2022-03-15 13:24:08,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8031 to 5471. [2022-03-15 13:24:08,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5471 states, 5468 states have (on average 2.050658376005852) internal successors, (11213), 5470 states have internal predecessors, (11213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 11213 transitions. [2022-03-15 13:24:08,352 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 11213 transitions. Word has length 99 [2022-03-15 13:24:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:08,353 INFO L470 AbstractCegarLoop]: Abstraction has 5471 states and 11213 transitions. [2022-03-15 13:24:08,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 11213 transitions. [2022-03-15 13:24:08,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:08,357 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:08,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:08,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-15 13:24:08,357 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:08,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:08,357 INFO L85 PathProgramCache]: Analyzing trace with hash 718038743, now seen corresponding path program 32 times [2022-03-15 13:24:08,357 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:08,357 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232804753] [2022-03-15 13:24:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:08,976 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:08,976 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232804753] [2022-03-15 13:24:08,976 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232804753] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:08,976 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:08,976 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:24:08,976 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433725384] [2022-03-15 13:24:08,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:08,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:24:08,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:08,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:24:08,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:24:08,984 INFO L87 Difference]: Start difference. First operand 5471 states and 11213 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:12,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:12,256 INFO L93 Difference]: Finished difference Result 8053 states and 16546 transitions. [2022-03-15 13:24:12,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:24:12,257 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:12,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:12,266 INFO L225 Difference]: With dead ends: 8053 [2022-03-15 13:24:12,267 INFO L226 Difference]: Without dead ends: 8053 [2022-03-15 13:24:12,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:24:12,267 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1582 mSDsluCounter, 8959 mSDsCounter, 0 mSdLazyCounter, 3484 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 9531 SdHoareTripleChecker+Invalid, 3516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:12,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 9531 Invalid, 3516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3484 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:24:12,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8053 states. [2022-03-15 13:24:12,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8053 to 5469. [2022-03-15 13:24:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5469 states, 5466 states have (on average 2.0506769118185146) internal successors, (11209), 5468 states have internal predecessors, (11209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5469 states to 5469 states and 11209 transitions. [2022-03-15 13:24:12,328 INFO L78 Accepts]: Start accepts. Automaton has 5469 states and 11209 transitions. Word has length 99 [2022-03-15 13:24:12,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:12,329 INFO L470 AbstractCegarLoop]: Abstraction has 5469 states and 11209 transitions. [2022-03-15 13:24:12,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:12,329 INFO L276 IsEmpty]: Start isEmpty. Operand 5469 states and 11209 transitions. [2022-03-15 13:24:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:12,332 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:12,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:12,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-15 13:24:12,333 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:12,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:12,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1464411143, now seen corresponding path program 33 times [2022-03-15 13:24:12,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:12,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422191321] [2022-03-15 13:24:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:12,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:12,983 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:12,983 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422191321] [2022-03-15 13:24:12,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422191321] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:12,983 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:12,983 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:24:12,983 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077986470] [2022-03-15 13:24:12,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:12,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:24:12,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:12,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:24:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:24:12,984 INFO L87 Difference]: Start difference. First operand 5469 states and 11209 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:16,426 INFO L93 Difference]: Finished difference Result 8104 states and 16648 transitions. [2022-03-15 13:24:16,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:24:16,426 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:16,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:16,435 INFO L225 Difference]: With dead ends: 8104 [2022-03-15 13:24:16,435 INFO L226 Difference]: Without dead ends: 8104 [2022-03-15 13:24:16,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:24:16,436 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1549 mSDsluCounter, 9722 mSDsCounter, 0 mSdLazyCounter, 3946 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 10293 SdHoareTripleChecker+Invalid, 3980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:16,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 10293 Invalid, 3980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3946 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:24:16,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8104 states. [2022-03-15 13:24:16,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8104 to 5465. [2022-03-15 13:24:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5465 states, 5462 states have (on average 2.0507140241669717) internal successors, (11201), 5464 states have internal predecessors, (11201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5465 states to 5465 states and 11201 transitions. [2022-03-15 13:24:16,552 INFO L78 Accepts]: Start accepts. Automaton has 5465 states and 11201 transitions. Word has length 99 [2022-03-15 13:24:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:16,552 INFO L470 AbstractCegarLoop]: Abstraction has 5465 states and 11201 transitions. [2022-03-15 13:24:16,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5465 states and 11201 transitions. [2022-03-15 13:24:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:16,556 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:16,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:16,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-15 13:24:16,556 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash 259071161, now seen corresponding path program 34 times [2022-03-15 13:24:16,557 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:16,557 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13022161] [2022-03-15 13:24:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:16,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:17,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:17,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13022161] [2022-03-15 13:24:17,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13022161] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:17,173 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:17,173 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:24:17,173 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079017568] [2022-03-15 13:24:17,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:17,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:24:17,173 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:17,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:24:17,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:24:17,174 INFO L87 Difference]: Start difference. First operand 5465 states and 11201 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:21,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:21,139 INFO L93 Difference]: Finished difference Result 7706 states and 15816 transitions. [2022-03-15 13:24:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:24:21,139 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:21,149 INFO L225 Difference]: With dead ends: 7706 [2022-03-15 13:24:21,149 INFO L226 Difference]: Without dead ends: 7706 [2022-03-15 13:24:21,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:24:21,151 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1580 mSDsluCounter, 9310 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 9876 SdHoareTripleChecker+Invalid, 3795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:21,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1580 Valid, 9876 Invalid, 3795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3760 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:24:21,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2022-03-15 13:24:21,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 5516. [2022-03-15 13:24:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5516 states, 5513 states have (on average 2.0502448757482314) internal successors, (11303), 5515 states have internal predecessors, (11303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 11303 transitions. [2022-03-15 13:24:21,232 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 11303 transitions. Word has length 99 [2022-03-15 13:24:21,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:21,232 INFO L470 AbstractCegarLoop]: Abstraction has 5516 states and 11303 transitions. [2022-03-15 13:24:21,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 11303 transitions. [2022-03-15 13:24:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:21,237 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:21,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:21,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-15 13:24:21,237 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:21,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1251499575, now seen corresponding path program 35 times [2022-03-15 13:24:21,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:21,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373948777] [2022-03-15 13:24:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:21,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:22,072 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:22,072 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373948777] [2022-03-15 13:24:22,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373948777] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:22,072 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:22,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:24:22,072 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235248722] [2022-03-15 13:24:22,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:22,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:24:22,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:22,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:24:22,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:24:22,073 INFO L87 Difference]: Start difference. First operand 5516 states and 11303 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:27,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:27,126 INFO L93 Difference]: Finished difference Result 8044 states and 16528 transitions. [2022-03-15 13:24:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:24:27,127 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:27,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:27,135 INFO L225 Difference]: With dead ends: 8044 [2022-03-15 13:24:27,135 INFO L226 Difference]: Without dead ends: 8044 [2022-03-15 13:24:27,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:24:27,135 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1547 mSDsluCounter, 10453 mSDsCounter, 0 mSdLazyCounter, 3952 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 11024 SdHoareTripleChecker+Invalid, 3985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:27,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 11024 Invalid, 3985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3952 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:24:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2022-03-15 13:24:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 5546. [2022-03-15 13:24:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5546 states, 5543 states have (on average 2.0503337542846833) internal successors, (11365), 5545 states have internal predecessors, (11365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5546 states to 5546 states and 11365 transitions. [2022-03-15 13:24:27,194 INFO L78 Accepts]: Start accepts. Automaton has 5546 states and 11365 transitions. Word has length 99 [2022-03-15 13:24:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:27,194 INFO L470 AbstractCegarLoop]: Abstraction has 5546 states and 11365 transitions. [2022-03-15 13:24:27,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5546 states and 11365 transitions. [2022-03-15 13:24:27,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:27,198 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:27,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:27,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-15 13:24:27,199 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:27,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:27,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1158856063, now seen corresponding path program 36 times [2022-03-15 13:24:27,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:27,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574993893] [2022-03-15 13:24:27,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:27,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:27,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:27,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574993893] [2022-03-15 13:24:27,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574993893] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:27,929 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:27,929 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:24:27,929 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475412850] [2022-03-15 13:24:27,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:27,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:24:27,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:24:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:24:27,930 INFO L87 Difference]: Start difference. First operand 5546 states and 11365 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:33,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:33,208 INFO L93 Difference]: Finished difference Result 10014 states and 20579 transitions. [2022-03-15 13:24:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:24:33,209 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:33,219 INFO L225 Difference]: With dead ends: 10014 [2022-03-15 13:24:33,219 INFO L226 Difference]: Without dead ends: 10014 [2022-03-15 13:24:33,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1066, Invalid=5096, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:24:33,220 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 1753 mSDsluCounter, 10768 mSDsCounter, 0 mSdLazyCounter, 3849 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 11385 SdHoareTripleChecker+Invalid, 3889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:33,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 11385 Invalid, 3889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3849 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:24:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10014 states. [2022-03-15 13:24:33,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10014 to 5548. [2022-03-15 13:24:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5548 states, 5545 states have (on average 2.0503155996393145) internal successors, (11369), 5547 states have internal predecessors, (11369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 11369 transitions. [2022-03-15 13:24:33,291 INFO L78 Accepts]: Start accepts. Automaton has 5548 states and 11369 transitions. Word has length 99 [2022-03-15 13:24:33,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:33,291 INFO L470 AbstractCegarLoop]: Abstraction has 5548 states and 11369 transitions. [2022-03-15 13:24:33,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5548 states and 11369 transitions. [2022-03-15 13:24:33,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:33,295 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:33,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:33,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-15 13:24:33,296 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1928941809, now seen corresponding path program 37 times [2022-03-15 13:24:33,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:33,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551855273] [2022-03-15 13:24:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:33,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:34,060 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:34,060 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551855273] [2022-03-15 13:24:34,060 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551855273] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:34,060 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:34,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:24:34,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26422782] [2022-03-15 13:24:34,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:34,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:24:34,061 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:34,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:24:34,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:24:34,061 INFO L87 Difference]: Start difference. First operand 5548 states and 11369 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:37,727 INFO L93 Difference]: Finished difference Result 8107 states and 16637 transitions. [2022-03-15 13:24:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:24:37,727 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:37,735 INFO L225 Difference]: With dead ends: 8107 [2022-03-15 13:24:37,735 INFO L226 Difference]: Without dead ends: 8107 [2022-03-15 13:24:37,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:24:37,736 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1567 mSDsluCounter, 9263 mSDsCounter, 0 mSdLazyCounter, 3509 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 9848 SdHoareTripleChecker+Invalid, 3542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:37,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 9848 Invalid, 3542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3509 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:24:37,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8107 states. [2022-03-15 13:24:37,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8107 to 5530. [2022-03-15 13:24:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5530 states, 5527 states have (on average 2.0501176044870637) internal successors, (11331), 5529 states have internal predecessors, (11331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 11331 transitions. [2022-03-15 13:24:37,806 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 11331 transitions. Word has length 99 [2022-03-15 13:24:37,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:37,806 INFO L470 AbstractCegarLoop]: Abstraction has 5530 states and 11331 transitions. [2022-03-15 13:24:37,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 11331 transitions. [2022-03-15 13:24:37,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:37,810 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:37,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:37,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-15 13:24:37,810 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:37,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:37,810 INFO L85 PathProgramCache]: Analyzing trace with hash -319090859, now seen corresponding path program 38 times [2022-03-15 13:24:37,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:37,811 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301933170] [2022-03-15 13:24:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:37,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:38,434 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:38,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301933170] [2022-03-15 13:24:38,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301933170] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:38,435 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:38,435 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:24:38,435 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614071231] [2022-03-15 13:24:38,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:38,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:24:38,435 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:38,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:24:38,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:24:38,436 INFO L87 Difference]: Start difference. First operand 5530 states and 11331 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:41,861 INFO L93 Difference]: Finished difference Result 8129 states and 16698 transitions. [2022-03-15 13:24:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:24:41,861 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:41,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:41,869 INFO L225 Difference]: With dead ends: 8129 [2022-03-15 13:24:41,869 INFO L226 Difference]: Without dead ends: 8129 [2022-03-15 13:24:41,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:24:41,871 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1561 mSDsluCounter, 9740 mSDsCounter, 0 mSdLazyCounter, 3695 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 10315 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:41,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1561 Valid, 10315 Invalid, 3729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3695 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:24:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8129 states. [2022-03-15 13:24:41,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8129 to 5528. [2022-03-15 13:24:41,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 5525 states have (on average 2.050135746606335) internal successors, (11327), 5527 states have internal predecessors, (11327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 11327 transitions. [2022-03-15 13:24:41,927 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 11327 transitions. Word has length 99 [2022-03-15 13:24:41,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:41,927 INFO L470 AbstractCegarLoop]: Abstraction has 5528 states and 11327 transitions. [2022-03-15 13:24:41,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 11327 transitions. [2022-03-15 13:24:41,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:41,931 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:41,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:41,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-15 13:24:41,931 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1793426551, now seen corresponding path program 39 times [2022-03-15 13:24:41,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:41,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311031584] [2022-03-15 13:24:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:41,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:42,563 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:42,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311031584] [2022-03-15 13:24:42,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311031584] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:42,564 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:42,564 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:24:42,564 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756735865] [2022-03-15 13:24:42,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:42,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:24:42,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:42,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:24:42,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:24:42,565 INFO L87 Difference]: Start difference. First operand 5528 states and 11327 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:46,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:46,022 INFO L93 Difference]: Finished difference Result 8180 states and 16800 transitions. [2022-03-15 13:24:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:24:46,022 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:46,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:46,031 INFO L225 Difference]: With dead ends: 8180 [2022-03-15 13:24:46,031 INFO L226 Difference]: Without dead ends: 8180 [2022-03-15 13:24:46,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:24:46,032 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1493 mSDsluCounter, 10489 mSDsCounter, 0 mSdLazyCounter, 4055 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 11063 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:46,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 11063 Invalid, 4086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4055 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:24:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2022-03-15 13:24:46,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 5524. [2022-03-15 13:24:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5521 states have (on average 2.0501720702771236) internal successors, (11319), 5523 states have internal predecessors, (11319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 11319 transitions. [2022-03-15 13:24:46,096 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 11319 transitions. Word has length 99 [2022-03-15 13:24:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:46,107 INFO L470 AbstractCegarLoop]: Abstraction has 5524 states and 11319 transitions. [2022-03-15 13:24:46,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 11319 transitions. [2022-03-15 13:24:46,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:46,111 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:46,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:46,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-15 13:24:46,111 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:46,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash -778058441, now seen corresponding path program 40 times [2022-03-15 13:24:46,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:46,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627424428] [2022-03-15 13:24:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:46,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:46,837 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:46,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627424428] [2022-03-15 13:24:46,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627424428] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:46,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:46,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:24:46,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890079384] [2022-03-15 13:24:46,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:46,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:24:46,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:46,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:24:46,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:24:46,838 INFO L87 Difference]: Start difference. First operand 5524 states and 11319 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:50,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:50,080 INFO L93 Difference]: Finished difference Result 8265 states and 16970 transitions. [2022-03-15 13:24:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:24:50,080 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:50,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:50,089 INFO L225 Difference]: With dead ends: 8265 [2022-03-15 13:24:50,089 INFO L226 Difference]: Without dead ends: 8265 [2022-03-15 13:24:50,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:24:50,091 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 1539 mSDsluCounter, 9511 mSDsCounter, 0 mSdLazyCounter, 3668 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 10089 SdHoareTripleChecker+Invalid, 3700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:50,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1539 Valid, 10089 Invalid, 3700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3668 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:24:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8265 states. [2022-03-15 13:24:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8265 to 5518. [2022-03-15 13:24:50,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5518 states, 5515 states have (on average 2.0502266545784225) internal successors, (11307), 5517 states have internal predecessors, (11307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5518 states to 5518 states and 11307 transitions. [2022-03-15 13:24:50,155 INFO L78 Accepts]: Start accepts. Automaton has 5518 states and 11307 transitions. Word has length 99 [2022-03-15 13:24:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:50,155 INFO L470 AbstractCegarLoop]: Abstraction has 5518 states and 11307 transitions. [2022-03-15 13:24:50,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5518 states and 11307 transitions. [2022-03-15 13:24:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:50,159 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:50,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:50,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-15 13:24:50,159 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:50,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:50,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2006609387, now seen corresponding path program 41 times [2022-03-15 13:24:50,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:50,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195034243] [2022-03-15 13:24:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:50,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:50,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:50,823 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195034243] [2022-03-15 13:24:50,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195034243] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:50,823 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:50,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:24:50,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669371825] [2022-03-15 13:24:50,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:50,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:24:50,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:50,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:24:50,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:24:50,824 INFO L87 Difference]: Start difference. First operand 5518 states and 11307 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:54,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:54,983 INFO L93 Difference]: Finished difference Result 7776 states and 15956 transitions. [2022-03-15 13:24:54,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:24:54,984 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:54,993 INFO L225 Difference]: With dead ends: 7776 [2022-03-15 13:24:54,993 INFO L226 Difference]: Without dead ends: 7776 [2022-03-15 13:24:54,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:24:54,994 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 1602 mSDsluCounter, 8353 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 8922 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:54,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 8922 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:24:55,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7776 states. [2022-03-15 13:24:55,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7776 to 5535. [2022-03-15 13:24:55,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5535 states, 5532 states have (on average 2.050072306579899) internal successors, (11341), 5534 states have internal predecessors, (11341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 11341 transitions. [2022-03-15 13:24:55,059 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 11341 transitions. Word has length 99 [2022-03-15 13:24:55,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:55,060 INFO L470 AbstractCegarLoop]: Abstraction has 5535 states and 11341 transitions. [2022-03-15 13:24:55,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:55,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 11341 transitions. [2022-03-15 13:24:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:55,064 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:55,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:55,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-15 13:24:55,064 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:55,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:55,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1348039269, now seen corresponding path program 42 times [2022-03-15 13:24:55,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:55,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431711608] [2022-03-15 13:24:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:55,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:24:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:24:55,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:24:55,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431711608] [2022-03-15 13:24:55,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431711608] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:24:55,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:24:55,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:24:55,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190973594] [2022-03-15 13:24:55,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:24:55,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:24:55,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:24:55,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:24:55,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:24:55,870 INFO L87 Difference]: Start difference. First operand 5535 states and 11341 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:24:59,372 INFO L93 Difference]: Finished difference Result 8082 states and 16604 transitions. [2022-03-15 13:24:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:24:59,372 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:24:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:24:59,381 INFO L225 Difference]: With dead ends: 8082 [2022-03-15 13:24:59,381 INFO L226 Difference]: Without dead ends: 8082 [2022-03-15 13:24:59,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:24:59,383 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 1567 mSDsluCounter, 9851 mSDsCounter, 0 mSdLazyCounter, 3822 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 10424 SdHoareTripleChecker+Invalid, 3853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:24:59,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 10424 Invalid, 3853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3822 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:24:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8082 states. [2022-03-15 13:24:59,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8082 to 5567. [2022-03-15 13:24:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5567 states, 5564 states have (on average 2.0501437814521926) internal successors, (11407), 5566 states have internal predecessors, (11407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5567 states to 5567 states and 11407 transitions. [2022-03-15 13:24:59,449 INFO L78 Accepts]: Start accepts. Automaton has 5567 states and 11407 transitions. Word has length 99 [2022-03-15 13:24:59,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:24:59,449 INFO L470 AbstractCegarLoop]: Abstraction has 5567 states and 11407 transitions. [2022-03-15 13:24:59,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:24:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5567 states and 11407 transitions. [2022-03-15 13:24:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:24:59,453 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:24:59,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:24:59,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-15 13:24:59,454 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:24:59,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:24:59,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1255395757, now seen corresponding path program 43 times [2022-03-15 13:24:59,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:24:59,454 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003513331] [2022-03-15 13:24:59,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:24:59,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:24:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:00,226 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:00,226 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003513331] [2022-03-15 13:25:00,226 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003513331] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:00,226 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:00,226 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:25:00,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225018945] [2022-03-15 13:25:00,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:00,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:25:00,227 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:00,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:25:00,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:25:00,227 INFO L87 Difference]: Start difference. First operand 5567 states and 11407 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:05,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:05,287 INFO L93 Difference]: Finished difference Result 10052 states and 20655 transitions. [2022-03-15 13:25:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:25:05,288 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:05,298 INFO L225 Difference]: With dead ends: 10052 [2022-03-15 13:25:05,299 INFO L226 Difference]: Without dead ends: 10052 [2022-03-15 13:25:05,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:25:05,299 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1800 mSDsluCounter, 10046 mSDsCounter, 0 mSdLazyCounter, 3710 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 10665 SdHoareTripleChecker+Invalid, 3749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:05,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1800 Valid, 10665 Invalid, 3749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3710 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:25:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10052 states. [2022-03-15 13:25:05,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10052 to 5569. [2022-03-15 13:25:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 5566 states have (on average 2.0501257635644987) internal successors, (11411), 5568 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:05,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 11411 transitions. [2022-03-15 13:25:05,363 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 11411 transitions. Word has length 99 [2022-03-15 13:25:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:05,364 INFO L470 AbstractCegarLoop]: Abstraction has 5569 states and 11411 transitions. [2022-03-15 13:25:05,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 11411 transitions. [2022-03-15 13:25:05,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:05,367 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:05,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:05,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-15 13:25:05,368 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:05,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:05,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1832402115, now seen corresponding path program 44 times [2022-03-15 13:25:05,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:05,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554175530] [2022-03-15 13:25:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:05,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:06,092 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:06,092 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554175530] [2022-03-15 13:25:06,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554175530] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:06,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:06,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:25:06,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656705980] [2022-03-15 13:25:06,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:06,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:25:06,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:06,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:25:06,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:25:06,093 INFO L87 Difference]: Start difference. First operand 5569 states and 11411 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:09,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:09,721 INFO L93 Difference]: Finished difference Result 8145 states and 16713 transitions. [2022-03-15 13:25:09,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:25:09,721 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:09,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:09,730 INFO L225 Difference]: With dead ends: 8145 [2022-03-15 13:25:09,731 INFO L226 Difference]: Without dead ends: 8145 [2022-03-15 13:25:09,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:25:09,731 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 1524 mSDsluCounter, 11039 mSDsCounter, 0 mSdLazyCounter, 4188 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 11626 SdHoareTripleChecker+Invalid, 4222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:09,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 11626 Invalid, 4222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4188 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:25:09,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8145 states. [2022-03-15 13:25:09,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8145 to 5551. [2022-03-15 13:25:09,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 5548 states have (on average 2.0499279019466474) internal successors, (11373), 5550 states have internal predecessors, (11373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 11373 transitions. [2022-03-15 13:25:09,813 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 11373 transitions. Word has length 99 [2022-03-15 13:25:09,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:09,814 INFO L470 AbstractCegarLoop]: Abstraction has 5551 states and 11373 transitions. [2022-03-15 13:25:09,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:09,814 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 11373 transitions. [2022-03-15 13:25:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:09,818 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:09,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:09,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-03-15 13:25:09,818 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:09,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash -222551165, now seen corresponding path program 45 times [2022-03-15 13:25:09,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:09,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476966020] [2022-03-15 13:25:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:09,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:10,503 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:10,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476966020] [2022-03-15 13:25:10,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476966020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:10,503 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:10,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:25:10,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809990037] [2022-03-15 13:25:10,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:10,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:25:10,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:10,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:25:10,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:25:10,504 INFO L87 Difference]: Start difference. First operand 5551 states and 11373 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:13,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:13,827 INFO L93 Difference]: Finished difference Result 8167 states and 16774 transitions. [2022-03-15 13:25:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:25:13,828 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:13,836 INFO L225 Difference]: With dead ends: 8167 [2022-03-15 13:25:13,836 INFO L226 Difference]: Without dead ends: 8167 [2022-03-15 13:25:13,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:25:13,836 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1610 mSDsluCounter, 9206 mSDsCounter, 0 mSdLazyCounter, 3546 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 9783 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:13,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 9783 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3546 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:25:13,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8167 states. [2022-03-15 13:25:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8167 to 5549. [2022-03-15 13:25:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5546 states have (on average 2.0499459069599713) internal successors, (11369), 5548 states have internal predecessors, (11369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:13,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 11369 transitions. [2022-03-15 13:25:13,895 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 11369 transitions. Word has length 99 [2022-03-15 13:25:13,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:13,896 INFO L470 AbstractCegarLoop]: Abstraction has 5549 states and 11369 transitions. [2022-03-15 13:25:13,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:13,896 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 11369 transitions. [2022-03-15 13:25:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:13,899 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:13,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:13,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-15 13:25:13,900 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:13,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:13,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1889966245, now seen corresponding path program 46 times [2022-03-15 13:25:13,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:13,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656044973] [2022-03-15 13:25:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:13,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:14,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:14,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656044973] [2022-03-15 13:25:14,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656044973] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:14,744 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:14,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:25:14,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179544412] [2022-03-15 13:25:14,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:14,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:25:14,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:25:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:25:14,745 INFO L87 Difference]: Start difference. First operand 5549 states and 11369 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:18,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:18,991 INFO L93 Difference]: Finished difference Result 8218 states and 16876 transitions. [2022-03-15 13:25:18,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:25:18,992 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:19,000 INFO L225 Difference]: With dead ends: 8218 [2022-03-15 13:25:19,000 INFO L226 Difference]: Without dead ends: 8218 [2022-03-15 13:25:19,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:25:19,000 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1552 mSDsluCounter, 10146 mSDsCounter, 0 mSdLazyCounter, 3935 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 10722 SdHoareTripleChecker+Invalid, 3967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:19,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 10722 Invalid, 3967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3935 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:25:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8218 states. [2022-03-15 13:25:19,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8218 to 5545. [2022-03-15 13:25:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5545 states, 5542 states have (on average 2.049981955972573) internal successors, (11361), 5544 states have internal predecessors, (11361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 11361 transitions. [2022-03-15 13:25:19,054 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 11361 transitions. Word has length 99 [2022-03-15 13:25:19,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:19,055 INFO L470 AbstractCegarLoop]: Abstraction has 5545 states and 11361 transitions. [2022-03-15 13:25:19,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:19,055 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 11361 transitions. [2022-03-15 13:25:19,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:19,058 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:19,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:19,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-15 13:25:19,059 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:19,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:19,059 INFO L85 PathProgramCache]: Analyzing trace with hash -681518747, now seen corresponding path program 47 times [2022-03-15 13:25:19,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:19,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286269767] [2022-03-15 13:25:19,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:19,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:19,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:19,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286269767] [2022-03-15 13:25:19,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286269767] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:19,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:19,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:25:19,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963766088] [2022-03-15 13:25:19,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:19,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:25:19,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:19,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:25:19,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:25:19,657 INFO L87 Difference]: Start difference. First operand 5545 states and 11361 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:22,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:22,925 INFO L93 Difference]: Finished difference Result 8303 states and 17046 transitions. [2022-03-15 13:25:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:25:22,925 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:22,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:22,933 INFO L225 Difference]: With dead ends: 8303 [2022-03-15 13:25:22,933 INFO L226 Difference]: Without dead ends: 8303 [2022-03-15 13:25:22,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:25:22,934 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1625 mSDsluCounter, 9947 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 10527 SdHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:22,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 10527 Invalid, 3738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3699 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:25:22,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8303 states. [2022-03-15 13:25:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8303 to 5539. [2022-03-15 13:25:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5539 states, 5536 states have (on average 2.05003612716763) internal successors, (11349), 5538 states have internal predecessors, (11349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5539 states to 5539 states and 11349 transitions. [2022-03-15 13:25:22,994 INFO L78 Accepts]: Start accepts. Automaton has 5539 states and 11349 transitions. Word has length 99 [2022-03-15 13:25:22,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:22,994 INFO L470 AbstractCegarLoop]: Abstraction has 5539 states and 11349 transitions. [2022-03-15 13:25:22,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5539 states and 11349 transitions. [2022-03-15 13:25:22,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:22,998 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:22,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:22,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-15 13:25:22,998 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:22,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1910069693, now seen corresponding path program 48 times [2022-03-15 13:25:22,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:22,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55911851] [2022-03-15 13:25:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:22,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:23,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:23,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55911851] [2022-03-15 13:25:23,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55911851] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:23,852 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:23,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:25:23,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872513169] [2022-03-15 13:25:23,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:23,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:25:23,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:23,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:25:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:25:23,853 INFO L87 Difference]: Start difference. First operand 5539 states and 11349 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:27,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:27,622 INFO L93 Difference]: Finished difference Result 8371 states and 17182 transitions. [2022-03-15 13:25:27,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:25:27,623 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:27,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:27,631 INFO L225 Difference]: With dead ends: 8371 [2022-03-15 13:25:27,631 INFO L226 Difference]: Without dead ends: 8371 [2022-03-15 13:25:27,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:25:27,631 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1549 mSDsluCounter, 10283 mSDsCounter, 0 mSdLazyCounter, 4013 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 10865 SdHoareTripleChecker+Invalid, 4044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:27,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 10865 Invalid, 4044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4013 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:25:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8371 states. [2022-03-15 13:25:27,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8371 to 5537. [2022-03-15 13:25:27,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5537 states, 5534 states have (on average 2.050054210336104) internal successors, (11345), 5536 states have internal predecessors, (11345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 11345 transitions. [2022-03-15 13:25:27,687 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 11345 transitions. Word has length 99 [2022-03-15 13:25:27,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:27,687 INFO L470 AbstractCegarLoop]: Abstraction has 5537 states and 11345 transitions. [2022-03-15 13:25:27,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:27,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 11345 transitions. [2022-03-15 13:25:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:27,691 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:27,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:27,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-15 13:25:27,691 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:27,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1959007845, now seen corresponding path program 49 times [2022-03-15 13:25:27,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:27,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307835933] [2022-03-15 13:25:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:27,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:28,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:28,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307835933] [2022-03-15 13:25:28,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307835933] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:28,653 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:28,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-03-15 13:25:28,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407596806] [2022-03-15 13:25:28,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:28,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 13:25:28,654 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:28,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 13:25:28,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 13:25:28,654 INFO L87 Difference]: Start difference. First operand 5537 states and 11345 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:33,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:33,752 INFO L93 Difference]: Finished difference Result 8485 states and 17418 transitions. [2022-03-15 13:25:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 13:25:33,752 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:33,761 INFO L225 Difference]: With dead ends: 8485 [2022-03-15 13:25:33,762 INFO L226 Difference]: Without dead ends: 8485 [2022-03-15 13:25:33,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1130, Invalid=5676, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 13:25:33,762 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1719 mSDsluCounter, 9939 mSDsCounter, 0 mSdLazyCounter, 3768 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 10513 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:33,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 10513 Invalid, 3809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3768 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:25:33,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8485 states. [2022-03-15 13:25:33,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8485 to 5921. [2022-03-15 13:25:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5921 states, 5918 states have (on average 2.052889489692464) internal successors, (12149), 5920 states have internal predecessors, (12149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5921 states to 5921 states and 12149 transitions. [2022-03-15 13:25:33,826 INFO L78 Accepts]: Start accepts. Automaton has 5921 states and 12149 transitions. Word has length 99 [2022-03-15 13:25:33,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:33,826 INFO L470 AbstractCegarLoop]: Abstraction has 5921 states and 12149 transitions. [2022-03-15 13:25:33,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5921 states and 12149 transitions. [2022-03-15 13:25:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:33,830 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:33,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:33,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-15 13:25:33,830 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:33,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1233893471, now seen corresponding path program 50 times [2022-03-15 13:25:33,831 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:33,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969225793] [2022-03-15 13:25:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:33,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:34,720 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:34,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969225793] [2022-03-15 13:25:34,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969225793] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:34,721 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:34,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:25:34,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029945219] [2022-03-15 13:25:34,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:34,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:25:34,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:34,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:25:34,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:25:34,722 INFO L87 Difference]: Start difference. First operand 5921 states and 12149 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:38,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:38,404 INFO L93 Difference]: Finished difference Result 9287 states and 19072 transitions. [2022-03-15 13:25:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:25:38,405 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:38,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:38,415 INFO L225 Difference]: With dead ends: 9287 [2022-03-15 13:25:38,415 INFO L226 Difference]: Without dead ends: 9287 [2022-03-15 13:25:38,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:25:38,416 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1529 mSDsluCounter, 10444 mSDsCounter, 0 mSdLazyCounter, 3998 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 11014 SdHoareTripleChecker+Invalid, 4032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:38,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 11014 Invalid, 4032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3998 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:25:38,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9287 states. [2022-03-15 13:25:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9287 to 5554. [2022-03-15 13:25:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5554 states, 5551 states have (on average 2.049900918753378) internal successors, (11379), 5553 states have internal predecessors, (11379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 11379 transitions. [2022-03-15 13:25:38,491 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 11379 transitions. Word has length 99 [2022-03-15 13:25:38,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:38,492 INFO L470 AbstractCegarLoop]: Abstraction has 5554 states and 11379 transitions. [2022-03-15 13:25:38,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 11379 transitions. [2022-03-15 13:25:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:38,496 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:38,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:38,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-15 13:25:38,496 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:38,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1893386159, now seen corresponding path program 51 times [2022-03-15 13:25:38,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:38,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838415626] [2022-03-15 13:25:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:38,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:39,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:39,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838415626] [2022-03-15 13:25:39,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838415626] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:39,105 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:39,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:25:39,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672073602] [2022-03-15 13:25:39,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:39,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:25:39,105 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:39,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:25:39,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:25:39,106 INFO L87 Difference]: Start difference. First operand 5554 states and 11379 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:42,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:42,489 INFO L93 Difference]: Finished difference Result 7778 states and 15977 transitions. [2022-03-15 13:25:42,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:25:42,489 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:42,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:42,497 INFO L225 Difference]: With dead ends: 7778 [2022-03-15 13:25:42,497 INFO L226 Difference]: Without dead ends: 7778 [2022-03-15 13:25:42,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:25:42,497 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1875 mSDsluCounter, 9605 mSDsCounter, 0 mSdLazyCounter, 3672 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 10181 SdHoareTripleChecker+Invalid, 3718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:42,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1875 Valid, 10181 Invalid, 3718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3672 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:25:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7778 states. [2022-03-15 13:25:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7778 to 5592. [2022-03-15 13:25:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5589 states have (on average 2.0499194847020936) internal successors, (11457), 5591 states have internal predecessors, (11457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 11457 transitions. [2022-03-15 13:25:42,551 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 11457 transitions. Word has length 99 [2022-03-15 13:25:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:42,551 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 11457 transitions. [2022-03-15 13:25:42,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 11457 transitions. [2022-03-15 13:25:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:42,555 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:42,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:42,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-15 13:25:42,555 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1986029671, now seen corresponding path program 52 times [2022-03-15 13:25:42,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:42,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328099424] [2022-03-15 13:25:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:42,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:43,383 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:43,383 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328099424] [2022-03-15 13:25:43,383 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328099424] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:43,383 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:43,383 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-03-15 13:25:43,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437943094] [2022-03-15 13:25:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:43,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 13:25:43,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:43,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 13:25:43,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1106, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 13:25:43,384 INFO L87 Difference]: Start difference. First operand 5592 states and 11457 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:49,725 INFO L93 Difference]: Finished difference Result 9893 states and 20323 transitions. [2022-03-15 13:25:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 13:25:49,726 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:49,736 INFO L225 Difference]: With dead ends: 9893 [2022-03-15 13:25:49,737 INFO L226 Difference]: Without dead ends: 9893 [2022-03-15 13:25:49,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1497 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1416, Invalid=6416, Unknown=0, NotChecked=0, Total=7832 [2022-03-15 13:25:49,737 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 1988 mSDsluCounter, 13235 mSDsCounter, 0 mSdLazyCounter, 4933 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 13906 SdHoareTripleChecker+Invalid, 4981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:49,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1988 Valid, 13906 Invalid, 4981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 4933 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 13:25:49,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2022-03-15 13:25:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 5594. [2022-03-15 13:25:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 5591 states have (on average 2.049901627615811) internal successors, (11461), 5593 states have internal predecessors, (11461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 11461 transitions. [2022-03-15 13:25:49,804 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 11461 transitions. Word has length 99 [2022-03-15 13:25:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:49,805 INFO L470 AbstractCegarLoop]: Abstraction has 5594 states and 11461 transitions. [2022-03-15 13:25:49,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:49,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 11461 transitions. [2022-03-15 13:25:49,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:49,808 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:49,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:49,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-15 13:25:49,809 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:49,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:49,809 INFO L85 PathProgramCache]: Analyzing trace with hash -778860247, now seen corresponding path program 53 times [2022-03-15 13:25:49,809 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:49,809 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398872235] [2022-03-15 13:25:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:50,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:50,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398872235] [2022-03-15 13:25:50,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398872235] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:50,576 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:50,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:25:50,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004715742] [2022-03-15 13:25:50,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:50,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:25:50,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:50,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:25:50,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:25:50,577 INFO L87 Difference]: Start difference. First operand 5594 states and 11461 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:54,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:54,604 INFO L93 Difference]: Finished difference Result 7841 states and 16086 transitions. [2022-03-15 13:25:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:25:54,604 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:54,612 INFO L225 Difference]: With dead ends: 7841 [2022-03-15 13:25:54,612 INFO L226 Difference]: Without dead ends: 7841 [2022-03-15 13:25:54,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=940, Invalid=4610, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:25:54,613 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1542 mSDsluCounter, 9599 mSDsCounter, 0 mSdLazyCounter, 3448 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 10189 SdHoareTripleChecker+Invalid, 3483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:54,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 10189 Invalid, 3483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3448 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:25:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7841 states. [2022-03-15 13:25:54,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7841 to 5576. [2022-03-15 13:25:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5576 states, 5573 states have (on average 2.049703929660865) internal successors, (11423), 5575 states have internal predecessors, (11423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:54,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5576 states to 5576 states and 11423 transitions. [2022-03-15 13:25:54,673 INFO L78 Accepts]: Start accepts. Automaton has 5576 states and 11423 transitions. Word has length 99 [2022-03-15 13:25:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:54,674 INFO L470 AbstractCegarLoop]: Abstraction has 5576 states and 11423 transitions. [2022-03-15 13:25:54,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:54,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5576 states and 11423 transitions. [2022-03-15 13:25:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:54,677 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:54,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:54,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-03-15 13:25:54,678 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:54,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:54,678 INFO L85 PathProgramCache]: Analyzing trace with hash 830990703, now seen corresponding path program 54 times [2022-03-15 13:25:54,678 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:54,678 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818525995] [2022-03-15 13:25:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:54,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:55,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:55,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818525995] [2022-03-15 13:25:55,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818525995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:55,321 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:55,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:25:55,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627690991] [2022-03-15 13:25:55,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:55,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:25:55,322 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:55,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:25:55,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:25:55,322 INFO L87 Difference]: Start difference. First operand 5576 states and 11423 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:25:58,587 INFO L93 Difference]: Finished difference Result 7863 states and 16147 transitions. [2022-03-15 13:25:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:25:58,588 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:25:58,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:25:58,597 INFO L225 Difference]: With dead ends: 7863 [2022-03-15 13:25:58,597 INFO L226 Difference]: Without dead ends: 7863 [2022-03-15 13:25:58,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:25:58,598 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1723 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 3482 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 9741 SdHoareTripleChecker+Invalid, 3519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:25:58,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 9741 Invalid, 3519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3482 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:25:58,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7863 states. [2022-03-15 13:25:58,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7863 to 5574. [2022-03-15 13:25:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5571 states have (on average 2.049721773469754) internal successors, (11419), 5573 states have internal predecessors, (11419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 11419 transitions. [2022-03-15 13:25:58,714 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 11419 transitions. Word has length 99 [2022-03-15 13:25:58,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:25:58,714 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 11419 transitions. [2022-03-15 13:25:58,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:25:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 11419 transitions. [2022-03-15 13:25:58,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:25:58,718 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:25:58,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:25:58,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-03-15 13:25:58,718 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:25:58,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:25:58,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1351459183, now seen corresponding path program 55 times [2022-03-15 13:25:58,719 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:25:58,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837422611] [2022-03-15 13:25:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:25:58,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:25:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:25:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:25:59,256 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:25:59,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837422611] [2022-03-15 13:25:59,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837422611] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:25:59,256 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:25:59,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:25:59,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682960946] [2022-03-15 13:25:59,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:25:59,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:25:59,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:25:59,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:25:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:25:59,257 INFO L87 Difference]: Start difference. First operand 5574 states and 11419 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:02,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:02,534 INFO L93 Difference]: Finished difference Result 7914 states and 16249 transitions. [2022-03-15 13:26:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:26:02,535 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:02,544 INFO L225 Difference]: With dead ends: 7914 [2022-03-15 13:26:02,545 INFO L226 Difference]: Without dead ends: 7914 [2022-03-15 13:26:02,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:26:02,545 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1590 mSDsluCounter, 9573 mSDsCounter, 0 mSdLazyCounter, 3647 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 10152 SdHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:02,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 10152 Invalid, 3680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3647 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:26:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2022-03-15 13:26:02,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 5570. [2022-03-15 13:26:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 5567 states have (on average 2.049757499550925) internal successors, (11411), 5569 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 11411 transitions. [2022-03-15 13:26:02,634 INFO L78 Accepts]: Start accepts. Automaton has 5570 states and 11411 transitions. Word has length 99 [2022-03-15 13:26:02,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:02,635 INFO L470 AbstractCegarLoop]: Abstraction has 5570 states and 11411 transitions. [2022-03-15 13:26:02,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5570 states and 11411 transitions. [2022-03-15 13:26:02,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:02,639 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:02,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:02,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-15 13:26:02,639 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:02,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:02,639 INFO L85 PathProgramCache]: Analyzing trace with hash 372023121, now seen corresponding path program 56 times [2022-03-15 13:26:02,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:02,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087181767] [2022-03-15 13:26:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:02,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:03,524 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:03,524 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087181767] [2022-03-15 13:26:03,524 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087181767] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:03,524 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:03,524 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:26:03,524 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998871673] [2022-03-15 13:26:03,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:03,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:26:03,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:03,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:26:03,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:26:03,525 INFO L87 Difference]: Start difference. First operand 5570 states and 11411 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:08,343 INFO L93 Difference]: Finished difference Result 7999 states and 16419 transitions. [2022-03-15 13:26:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:26:08,344 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:08,351 INFO L225 Difference]: With dead ends: 7999 [2022-03-15 13:26:08,351 INFO L226 Difference]: Without dead ends: 7999 [2022-03-15 13:26:08,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=960, Invalid=4740, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:26:08,352 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 1849 mSDsluCounter, 9608 mSDsCounter, 0 mSdLazyCounter, 3711 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 10191 SdHoareTripleChecker+Invalid, 3756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:08,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 10191 Invalid, 3756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3711 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:26:08,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7999 states. [2022-03-15 13:26:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7999 to 5564. [2022-03-15 13:26:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5564 states, 5561 states have (on average 2.049811185038662) internal successors, (11399), 5563 states have internal predecessors, (11399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 11399 transitions. [2022-03-15 13:26:08,404 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 11399 transitions. Word has length 99 [2022-03-15 13:26:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:08,404 INFO L470 AbstractCegarLoop]: Abstraction has 5564 states and 11399 transitions. [2022-03-15 13:26:08,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 11399 transitions. [2022-03-15 13:26:08,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:08,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:08,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:08,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-03-15 13:26:08,409 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:08,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:08,409 INFO L85 PathProgramCache]: Analyzing trace with hash -856527825, now seen corresponding path program 57 times [2022-03-15 13:26:08,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:08,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005677733] [2022-03-15 13:26:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:08,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:09,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:09,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:09,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005677733] [2022-03-15 13:26:09,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005677733] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:09,497 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:09,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-03-15 13:26:09,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107122320] [2022-03-15 13:26:09,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:09,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 13:26:09,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:09,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 13:26:09,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:26:09,498 INFO L87 Difference]: Start difference. First operand 5564 states and 11399 transitions. Second operand has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:16,031 INFO L93 Difference]: Finished difference Result 9103 states and 18715 transitions. [2022-03-15 13:26:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-15 13:26:16,031 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:16,041 INFO L225 Difference]: With dead ends: 9103 [2022-03-15 13:26:16,041 INFO L226 Difference]: Without dead ends: 9103 [2022-03-15 13:26:16,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1404, Invalid=7152, Unknown=0, NotChecked=0, Total=8556 [2022-03-15 13:26:16,042 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 1995 mSDsluCounter, 10400 mSDsCounter, 0 mSdLazyCounter, 4155 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 10989 SdHoareTripleChecker+Invalid, 4205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:16,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1995 Valid, 10989 Invalid, 4205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4155 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 13:26:16,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9103 states. [2022-03-15 13:26:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9103 to 5931. [2022-03-15 13:26:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5931 states, 5928 states have (on average 2.052800269905533) internal successors, (12169), 5930 states have internal predecessors, (12169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5931 states to 5931 states and 12169 transitions. [2022-03-15 13:26:16,106 INFO L78 Accepts]: Start accepts. Automaton has 5931 states and 12169 transitions. Word has length 99 [2022-03-15 13:26:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:16,106 INFO L470 AbstractCegarLoop]: Abstraction has 5931 states and 12169 transitions. [2022-03-15 13:26:16,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5931 states and 12169 transitions. [2022-03-15 13:26:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:16,110 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:16,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:16,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-03-15 13:26:16,111 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:16,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:16,112 INFO L85 PathProgramCache]: Analyzing trace with hash 245538155, now seen corresponding path program 58 times [2022-03-15 13:26:16,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:16,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391679456] [2022-03-15 13:26:16,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:16,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:16,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:16,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391679456] [2022-03-15 13:26:16,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391679456] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:16,709 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:16,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:26:16,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640067080] [2022-03-15 13:26:16,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:16,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:26:16,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:26:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:26:16,710 INFO L87 Difference]: Start difference. First operand 5931 states and 12169 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:19,888 INFO L93 Difference]: Finished difference Result 9542 states and 19599 transitions. [2022-03-15 13:26:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:26:19,888 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:19,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:19,898 INFO L225 Difference]: With dead ends: 9542 [2022-03-15 13:26:19,898 INFO L226 Difference]: Without dead ends: 9542 [2022-03-15 13:26:19,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=945, Invalid=4605, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:26:19,899 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1616 mSDsluCounter, 9315 mSDsCounter, 0 mSdLazyCounter, 3635 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 9900 SdHoareTripleChecker+Invalid, 3667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:19,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1616 Valid, 9900 Invalid, 3667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3635 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:26:19,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9542 states. [2022-03-15 13:26:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9542 to 5562. [2022-03-15 13:26:19,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5562 states, 5559 states have (on average 2.0498291059543083) internal successors, (11395), 5561 states have internal predecessors, (11395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 11395 transitions. [2022-03-15 13:26:19,962 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 11395 transitions. Word has length 99 [2022-03-15 13:26:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:19,962 INFO L470 AbstractCegarLoop]: Abstraction has 5562 states and 11395 transitions. [2022-03-15 13:26:19,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 11395 transitions. [2022-03-15 13:26:19,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:19,966 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:19,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:19,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-03-15 13:26:19,966 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:19,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1282417583, now seen corresponding path program 59 times [2022-03-15 13:26:19,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:19,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186714789] [2022-03-15 13:26:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:19,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:20,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:20,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186714789] [2022-03-15 13:26:20,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186714789] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:20,552 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:20,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:26:20,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662200157] [2022-03-15 13:26:20,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:20,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:26:20,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:20,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:26:20,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:26:20,553 INFO L87 Difference]: Start difference. First operand 5562 states and 11395 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:23,902 INFO L93 Difference]: Finished difference Result 8101 states and 16623 transitions. [2022-03-15 13:26:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:26:23,902 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:23,910 INFO L225 Difference]: With dead ends: 8101 [2022-03-15 13:26:23,910 INFO L226 Difference]: Without dead ends: 8101 [2022-03-15 13:26:23,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:26:23,911 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1588 mSDsluCounter, 9987 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 10573 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:23,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 10573 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:26:23,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2022-03-15 13:26:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 5560. [2022-03-15 13:26:23,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5557 states have (on average 2.0498470397696598) internal successors, (11391), 5559 states have internal predecessors, (11391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 11391 transitions. [2022-03-15 13:26:23,970 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 11391 transitions. Word has length 99 [2022-03-15 13:26:23,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:23,970 INFO L470 AbstractCegarLoop]: Abstraction has 5560 states and 11391 transitions. [2022-03-15 13:26:23,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 11391 transitions. [2022-03-15 13:26:23,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:23,975 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:23,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:23,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-03-15 13:26:23,975 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:23,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:23,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1718301777, now seen corresponding path program 60 times [2022-03-15 13:26:23,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:23,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155297514] [2022-03-15 13:26:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:23,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:24,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:24,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155297514] [2022-03-15 13:26:24,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155297514] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:24,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:24,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:26:24,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356968414] [2022-03-15 13:26:24,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:24,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:26:24,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:24,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:26:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:26:24,740 INFO L87 Difference]: Start difference. First operand 5560 states and 11391 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:27,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:27,982 INFO L93 Difference]: Finished difference Result 7506 states and 15397 transitions. [2022-03-15 13:26:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:26:27,983 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:27,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:27,992 INFO L225 Difference]: With dead ends: 7506 [2022-03-15 13:26:27,993 INFO L226 Difference]: Without dead ends: 7506 [2022-03-15 13:26:27,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:26:27,994 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1484 mSDsluCounter, 10165 mSDsCounter, 0 mSdLazyCounter, 3752 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 10739 SdHoareTripleChecker+Invalid, 3784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:27,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1484 Valid, 10739 Invalid, 3784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3752 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:26:28,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7506 states. [2022-03-15 13:26:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7506 to 5611. [2022-03-15 13:26:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5611 states, 5608 states have (on average 2.0493937232524964) internal successors, (11493), 5610 states have internal predecessors, (11493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5611 states to 5611 states and 11493 transitions. [2022-03-15 13:26:28,083 INFO L78 Accepts]: Start accepts. Automaton has 5611 states and 11493 transitions. Word has length 99 [2022-03-15 13:26:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:28,083 INFO L470 AbstractCegarLoop]: Abstraction has 5611 states and 11493 transitions. [2022-03-15 13:26:28,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5611 states and 11493 transitions. [2022-03-15 13:26:28,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:28,087 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:28,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:28,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-03-15 13:26:28,087 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:28,088 INFO L85 PathProgramCache]: Analyzing trace with hash -86186341, now seen corresponding path program 61 times [2022-03-15 13:26:28,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:28,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239328657] [2022-03-15 13:26:28,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:28,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:28,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:28,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239328657] [2022-03-15 13:26:28,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239328657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:28,652 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:28,652 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:26:28,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482223484] [2022-03-15 13:26:28,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:28,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:26:28,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:28,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:26:28,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:26:28,653 INFO L87 Difference]: Start difference. First operand 5611 states and 11493 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:31,964 INFO L93 Difference]: Finished difference Result 7288 states and 14960 transitions. [2022-03-15 13:26:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:26:31,964 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:31,972 INFO L225 Difference]: With dead ends: 7288 [2022-03-15 13:26:31,972 INFO L226 Difference]: Without dead ends: 7288 [2022-03-15 13:26:31,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:26:31,973 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1494 mSDsluCounter, 9462 mSDsCounter, 0 mSdLazyCounter, 3587 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 10014 SdHoareTripleChecker+Invalid, 3618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:31,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1494 Valid, 10014 Invalid, 3618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3587 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:26:31,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7288 states. [2022-03-15 13:26:32,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7288 to 5635. [2022-03-15 13:26:32,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5635 states, 5632 states have (on average 2.049715909090909) internal successors, (11544), 5634 states have internal predecessors, (11544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:32,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5635 states to 5635 states and 11544 transitions. [2022-03-15 13:26:32,029 INFO L78 Accepts]: Start accepts. Automaton has 5635 states and 11544 transitions. Word has length 99 [2022-03-15 13:26:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:32,029 INFO L470 AbstractCegarLoop]: Abstraction has 5635 states and 11544 transitions. [2022-03-15 13:26:32,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5635 states and 11544 transitions. [2022-03-15 13:26:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:32,032 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:32,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:32,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-15 13:26:32,033 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:32,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash -178829853, now seen corresponding path program 62 times [2022-03-15 13:26:32,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:32,033 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434802780] [2022-03-15 13:26:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:32,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:32,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:32,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434802780] [2022-03-15 13:26:32,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434802780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:32,652 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:32,652 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:26:32,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231972209] [2022-03-15 13:26:32,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:32,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:26:32,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:32,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:26:32,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:26:32,653 INFO L87 Difference]: Start difference. First operand 5635 states and 11544 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:37,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:37,425 INFO L93 Difference]: Finished difference Result 9328 states and 19168 transitions. [2022-03-15 13:26:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:26:37,425 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:37,435 INFO L225 Difference]: With dead ends: 9328 [2022-03-15 13:26:37,435 INFO L226 Difference]: Without dead ends: 9328 [2022-03-15 13:26:37,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:26:37,436 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 1589 mSDsluCounter, 11272 mSDsCounter, 0 mSdLazyCounter, 4171 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 11870 SdHoareTripleChecker+Invalid, 4211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:37,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 11870 Invalid, 4211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4171 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:26:37,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9328 states. [2022-03-15 13:26:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9328 to 5637. [2022-03-15 13:26:37,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5637 states, 5634 states have (on average 2.0496982605608802) internal successors, (11548), 5636 states have internal predecessors, (11548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 11548 transitions. [2022-03-15 13:26:37,501 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 11548 transitions. Word has length 99 [2022-03-15 13:26:37,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:37,502 INFO L470 AbstractCegarLoop]: Abstraction has 5637 states and 11548 transitions. [2022-03-15 13:26:37,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:37,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 11548 transitions. [2022-03-15 13:26:37,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:37,505 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:37,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:37,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-03-15 13:26:37,506 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:37,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:37,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1028339571, now seen corresponding path program 63 times [2022-03-15 13:26:37,506 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:37,506 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202004523] [2022-03-15 13:26:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:37,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:38,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:38,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202004523] [2022-03-15 13:26:38,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202004523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:38,298 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:38,298 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:26:38,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331952920] [2022-03-15 13:26:38,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:38,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:26:38,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:38,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:26:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:26:38,299 INFO L87 Difference]: Start difference. First operand 5637 states and 11548 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:41,726 INFO L93 Difference]: Finished difference Result 7370 states and 15126 transitions. [2022-03-15 13:26:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:26:41,727 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:41,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:41,734 INFO L225 Difference]: With dead ends: 7370 [2022-03-15 13:26:41,734 INFO L226 Difference]: Without dead ends: 7370 [2022-03-15 13:26:41,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:26:41,734 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1738 mSDsluCounter, 8881 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 9447 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:41,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1738 Valid, 9447 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:26:41,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2022-03-15 13:26:41,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 5619. [2022-03-15 13:26:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5619 states, 5616 states have (on average 2.0495014245014245) internal successors, (11510), 5618 states have internal predecessors, (11510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:41,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 11510 transitions. [2022-03-15 13:26:41,785 INFO L78 Accepts]: Start accepts. Automaton has 5619 states and 11510 transitions. Word has length 99 [2022-03-15 13:26:41,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:41,785 INFO L470 AbstractCegarLoop]: Abstraction has 5619 states and 11510 transitions. [2022-03-15 13:26:41,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:41,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5619 states and 11510 transitions. [2022-03-15 13:26:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:41,789 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:41,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:41,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-03-15 13:26:41,790 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:41,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash -966883357, now seen corresponding path program 64 times [2022-03-15 13:26:41,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:41,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819443259] [2022-03-15 13:26:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:41,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:42,331 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:42,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819443259] [2022-03-15 13:26:42,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819443259] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:42,332 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:42,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:26:42,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902962608] [2022-03-15 13:26:42,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:42,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:26:42,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:42,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:26:42,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:26:42,332 INFO L87 Difference]: Start difference. First operand 5619 states and 11510 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:46,223 INFO L93 Difference]: Finished difference Result 9503 states and 19526 transitions. [2022-03-15 13:26:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:26:46,223 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:46,234 INFO L225 Difference]: With dead ends: 9503 [2022-03-15 13:26:46,234 INFO L226 Difference]: Without dead ends: 9503 [2022-03-15 13:26:46,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1180, Invalid=5462, Unknown=0, NotChecked=0, Total=6642 [2022-03-15 13:26:46,235 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 1799 mSDsluCounter, 10687 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 11309 SdHoareTripleChecker+Invalid, 3784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:46,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1799 Valid, 11309 Invalid, 3784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 3743 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:26:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9503 states. [2022-03-15 13:26:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9503 to 5620. [2022-03-15 13:26:46,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5620 states, 5617 states have (on average 2.0494926117144385) internal successors, (11512), 5619 states have internal predecessors, (11512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5620 states to 5620 states and 11512 transitions. [2022-03-15 13:26:46,307 INFO L78 Accepts]: Start accepts. Automaton has 5620 states and 11512 transitions. Word has length 99 [2022-03-15 13:26:46,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:46,307 INFO L470 AbstractCegarLoop]: Abstraction has 5620 states and 11512 transitions. [2022-03-15 13:26:46,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:46,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5620 states and 11512 transitions. [2022-03-15 13:26:46,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:46,312 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:46,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:46,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-03-15 13:26:46,312 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash -988076429, now seen corresponding path program 65 times [2022-03-15 13:26:46,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:46,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781227082] [2022-03-15 13:26:46,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:46,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:46,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:46,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781227082] [2022-03-15 13:26:46,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781227082] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:46,909 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:46,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:26:46,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491680697] [2022-03-15 13:26:46,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:46,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:26:46,909 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:46,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:26:46,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:26:46,910 INFO L87 Difference]: Start difference. First operand 5620 states and 11512 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:51,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:51,253 INFO L93 Difference]: Finished difference Result 8488 states and 17429 transitions. [2022-03-15 13:26:51,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:26:51,253 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:51,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:51,261 INFO L225 Difference]: With dead ends: 8488 [2022-03-15 13:26:51,261 INFO L226 Difference]: Without dead ends: 8488 [2022-03-15 13:26:51,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1044, Invalid=4962, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:26:51,262 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1646 mSDsluCounter, 10202 mSDsCounter, 0 mSdLazyCounter, 3833 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 10792 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:51,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1646 Valid, 10792 Invalid, 3866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3833 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:26:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8488 states. [2022-03-15 13:26:51,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8488 to 5622. [2022-03-15 13:26:51,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 5619 states have (on average 2.04947499555081) internal successors, (11516), 5621 states have internal predecessors, (11516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:51,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 11516 transitions. [2022-03-15 13:26:51,319 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 11516 transitions. Word has length 99 [2022-03-15 13:26:51,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:51,319 INFO L470 AbstractCegarLoop]: Abstraction has 5622 states and 11516 transitions. [2022-03-15 13:26:51,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:51,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 11516 transitions. [2022-03-15 13:26:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:51,323 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:51,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:51,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-03-15 13:26:51,323 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1472913395, now seen corresponding path program 66 times [2022-03-15 13:26:51,323 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:51,323 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492013396] [2022-03-15 13:26:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:51,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:52,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:52,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492013396] [2022-03-15 13:26:52,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492013396] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:52,095 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:52,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:26:52,095 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948867338] [2022-03-15 13:26:52,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:52,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:26:52,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:52,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:26:52,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:26:52,096 INFO L87 Difference]: Start difference. First operand 5622 states and 11516 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:26:55,765 INFO L93 Difference]: Finished difference Result 7443 states and 15275 transitions. [2022-03-15 13:26:55,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:26:55,765 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:26:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:26:55,775 INFO L225 Difference]: With dead ends: 7443 [2022-03-15 13:26:55,775 INFO L226 Difference]: Without dead ends: 7443 [2022-03-15 13:26:55,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=935, Invalid=4615, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:26:55,776 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1652 mSDsluCounter, 9549 mSDsCounter, 0 mSdLazyCounter, 3468 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 10115 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:26:55,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1652 Valid, 10115 Invalid, 3506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3468 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:26:55,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7443 states. [2022-03-15 13:26:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7443 to 5611. [2022-03-15 13:26:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5611 states, 5608 states have (on average 2.0493937232524964) internal successors, (11493), 5610 states have internal predecessors, (11493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5611 states to 5611 states and 11493 transitions. [2022-03-15 13:26:55,849 INFO L78 Accepts]: Start accepts. Automaton has 5611 states and 11493 transitions. Word has length 99 [2022-03-15 13:26:55,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:26:55,850 INFO L470 AbstractCegarLoop]: Abstraction has 5611 states and 11493 transitions. [2022-03-15 13:26:55,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:26:55,850 INFO L276 IsEmpty]: Start isEmpty. Operand 5611 states and 11493 transitions. [2022-03-15 13:26:55,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:26:55,854 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:26:55,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:26:55,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-15 13:26:55,855 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:26:55,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:26:55,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1628672577, now seen corresponding path program 67 times [2022-03-15 13:26:55,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:26:55,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173615800] [2022-03-15 13:26:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:26:55,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:26:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:26:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:26:56,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:26:56,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173615800] [2022-03-15 13:26:56,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173615800] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:26:56,446 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:26:56,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:26:56,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808827120] [2022-03-15 13:26:56,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:26:56,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:26:56,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:26:56,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:26:56,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:26:56,447 INFO L87 Difference]: Start difference. First operand 5611 states and 11493 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:00,904 INFO L93 Difference]: Finished difference Result 7766 states and 15897 transitions. [2022-03-15 13:27:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-15 13:27:00,905 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:00,914 INFO L225 Difference]: With dead ends: 7766 [2022-03-15 13:27:00,914 INFO L226 Difference]: Without dead ends: 7766 [2022-03-15 13:27:00,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1251, Invalid=5721, Unknown=0, NotChecked=0, Total=6972 [2022-03-15 13:27:00,915 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1901 mSDsluCounter, 10191 mSDsCounter, 0 mSdLazyCounter, 3524 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 10781 SdHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:00,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1901 Valid, 10781 Invalid, 3570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3524 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:27:00,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7766 states. [2022-03-15 13:27:00,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7766 to 5626. [2022-03-15 13:27:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5626 states, 5623 states have (on average 2.049261959807932) internal successors, (11523), 5625 states have internal predecessors, (11523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 11523 transitions. [2022-03-15 13:27:00,983 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 11523 transitions. Word has length 99 [2022-03-15 13:27:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:00,983 INFO L470 AbstractCegarLoop]: Abstraction has 5626 states and 11523 transitions. [2022-03-15 13:27:00,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:00,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 11523 transitions. [2022-03-15 13:27:00,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:00,987 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:00,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:00,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-03-15 13:27:00,988 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:00,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:00,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1781291341, now seen corresponding path program 68 times [2022-03-15 13:27:00,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:00,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930971464] [2022-03-15 13:27:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:00,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:01,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:01,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930971464] [2022-03-15 13:27:01,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930971464] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:01,824 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:01,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:27:01,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147094002] [2022-03-15 13:27:01,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:01,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:27:01,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:01,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:27:01,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:27:01,825 INFO L87 Difference]: Start difference. First operand 5626 states and 11523 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:06,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:06,852 INFO L93 Difference]: Finished difference Result 8214 states and 16844 transitions. [2022-03-15 13:27:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:27:06,852 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:06,862 INFO L225 Difference]: With dead ends: 8214 [2022-03-15 13:27:06,862 INFO L226 Difference]: Without dead ends: 8214 [2022-03-15 13:27:06,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1157, Invalid=5323, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 13:27:06,863 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1853 mSDsluCounter, 10825 mSDsCounter, 0 mSdLazyCounter, 3906 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 11415 SdHoareTripleChecker+Invalid, 3941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:06,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 11415 Invalid, 3941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3906 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:27:06,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8214 states. [2022-03-15 13:27:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8214 to 5627. [2022-03-15 13:27:06,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5627 states, 5624 states have (on average 2.04925320056899) internal successors, (11525), 5626 states have internal predecessors, (11525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5627 states to 5627 states and 11525 transitions. [2022-03-15 13:27:06,936 INFO L78 Accepts]: Start accepts. Automaton has 5627 states and 11525 transitions. Word has length 99 [2022-03-15 13:27:06,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:06,936 INFO L470 AbstractCegarLoop]: Abstraction has 5627 states and 11525 transitions. [2022-03-15 13:27:06,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5627 states and 11525 transitions. [2022-03-15 13:27:06,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:06,942 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:06,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:06,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-03-15 13:27:06,942 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:06,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1760098269, now seen corresponding path program 69 times [2022-03-15 13:27:06,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:06,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330443518] [2022-03-15 13:27:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:06,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:07,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:07,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330443518] [2022-03-15 13:27:07,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330443518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:07,502 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:07,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:27:07,502 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30299253] [2022-03-15 13:27:07,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:07,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:27:07,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:27:07,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:27:07,503 INFO L87 Difference]: Start difference. First operand 5627 states and 11525 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:11,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:11,791 INFO L93 Difference]: Finished difference Result 8127 states and 16667 transitions. [2022-03-15 13:27:11,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:27:11,791 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:11,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:11,799 INFO L225 Difference]: With dead ends: 8127 [2022-03-15 13:27:11,800 INFO L226 Difference]: Without dead ends: 8127 [2022-03-15 13:27:11,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1038, Invalid=4968, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:27:11,800 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1849 mSDsluCounter, 9219 mSDsCounter, 0 mSdLazyCounter, 3308 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 9786 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:11,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 9786 Invalid, 3344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3308 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:27:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8127 states. [2022-03-15 13:27:11,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8127 to 5629. [2022-03-15 13:27:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5629 states, 5626 states have (on average 2.049235691432634) internal successors, (11529), 5628 states have internal predecessors, (11529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5629 states to 5629 states and 11529 transitions. [2022-03-15 13:27:11,867 INFO L78 Accepts]: Start accepts. Automaton has 5629 states and 11529 transitions. Word has length 99 [2022-03-15 13:27:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:11,868 INFO L470 AbstractCegarLoop]: Abstraction has 5629 states and 11529 transitions. [2022-03-15 13:27:11,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5629 states and 11529 transitions. [2022-03-15 13:27:11,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:11,872 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:11,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:11,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-03-15 13:27:11,872 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:11,872 INFO L85 PathProgramCache]: Analyzing trace with hash -73879203, now seen corresponding path program 70 times [2022-03-15 13:27:11,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:11,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394975325] [2022-03-15 13:27:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:11,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:12,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:12,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394975325] [2022-03-15 13:27:12,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394975325] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:12,541 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:12,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:27:12,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123684332] [2022-03-15 13:27:12,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:12,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:27:12,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:12,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:27:12,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:27:12,542 INFO L87 Difference]: Start difference. First operand 5629 states and 11529 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:15,913 INFO L93 Difference]: Finished difference Result 7082 states and 14513 transitions. [2022-03-15 13:27:15,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:27:15,914 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:15,921 INFO L225 Difference]: With dead ends: 7082 [2022-03-15 13:27:15,921 INFO L226 Difference]: Without dead ends: 7082 [2022-03-15 13:27:15,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=931, Invalid=4619, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:27:15,921 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1481 mSDsluCounter, 8702 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 9245 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:15,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 9245 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 13:27:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7082 states. [2022-03-15 13:27:15,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7082 to 5626. [2022-03-15 13:27:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5626 states, 5623 states have (on average 2.049261959807932) internal successors, (11523), 5625 states have internal predecessors, (11523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 11523 transitions. [2022-03-15 13:27:15,986 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 11523 transitions. Word has length 99 [2022-03-15 13:27:15,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:15,986 INFO L470 AbstractCegarLoop]: Abstraction has 5626 states and 11523 transitions. [2022-03-15 13:27:15,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:15,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 11523 transitions. [2022-03-15 13:27:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:15,990 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:15,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:15,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-03-15 13:27:15,990 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:15,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1594576337, now seen corresponding path program 71 times [2022-03-15 13:27:15,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:15,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484107485] [2022-03-15 13:27:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:15,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:16,873 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:16,873 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484107485] [2022-03-15 13:27:16,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484107485] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:16,874 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:16,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-03-15 13:27:16,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062541227] [2022-03-15 13:27:16,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:16,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 13:27:16,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 13:27:16,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 13:27:16,874 INFO L87 Difference]: Start difference. First operand 5626 states and 11523 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:20,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:20,999 INFO L93 Difference]: Finished difference Result 8150 states and 16747 transitions. [2022-03-15 13:27:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 13:27:21,000 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:21,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:21,009 INFO L225 Difference]: With dead ends: 8150 [2022-03-15 13:27:21,009 INFO L226 Difference]: Without dead ends: 8150 [2022-03-15 13:27:21,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1133, Invalid=5673, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 13:27:21,010 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1863 mSDsluCounter, 9742 mSDsCounter, 0 mSdLazyCounter, 3845 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 10303 SdHoareTripleChecker+Invalid, 3891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:21,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1863 Valid, 10303 Invalid, 3891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3845 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:27:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8150 states. [2022-03-15 13:27:21,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8150 to 5935. [2022-03-15 13:27:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5935 states, 5932 states have (on average 2.0559676331759946) internal successors, (12196), 5934 states have internal predecessors, (12196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5935 states to 5935 states and 12196 transitions. [2022-03-15 13:27:21,078 INFO L78 Accepts]: Start accepts. Automaton has 5935 states and 12196 transitions. Word has length 99 [2022-03-15 13:27:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:21,078 INFO L470 AbstractCegarLoop]: Abstraction has 5935 states and 12196 transitions. [2022-03-15 13:27:21,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:21,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5935 states and 12196 transitions. [2022-03-15 13:27:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:21,083 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:21,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:21,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-03-15 13:27:21,083 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash -492510357, now seen corresponding path program 72 times [2022-03-15 13:27:21,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:21,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331326543] [2022-03-15 13:27:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:21,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:21,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:21,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331326543] [2022-03-15 13:27:21,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331326543] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:21,713 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:21,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:27:21,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229143044] [2022-03-15 13:27:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:21,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:27:21,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:27:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:27:21,714 INFO L87 Difference]: Start difference. First operand 5935 states and 12196 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:25,196 INFO L93 Difference]: Finished difference Result 8946 states and 18387 transitions. [2022-03-15 13:27:25,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:27:25,197 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:25,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:25,208 INFO L225 Difference]: With dead ends: 8946 [2022-03-15 13:27:25,209 INFO L226 Difference]: Without dead ends: 8946 [2022-03-15 13:27:25,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:27:25,209 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1491 mSDsluCounter, 9480 mSDsCounter, 0 mSdLazyCounter, 3584 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 10037 SdHoareTripleChecker+Invalid, 3617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:25,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1491 Valid, 10037 Invalid, 3617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3584 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:27:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8946 states. [2022-03-15 13:27:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8946 to 5642. [2022-03-15 13:27:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5639 states have (on average 2.049476857598865) internal successors, (11557), 5641 states have internal predecessors, (11557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:25,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 11557 transitions. [2022-03-15 13:27:25,334 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 11557 transitions. Word has length 99 [2022-03-15 13:27:25,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:25,334 INFO L470 AbstractCegarLoop]: Abstraction has 5642 states and 11557 transitions. [2022-03-15 13:27:25,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:25,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 11557 transitions. [2022-03-15 13:27:25,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:25,338 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:25,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:25,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-03-15 13:27:25,338 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1687219849, now seen corresponding path program 73 times [2022-03-15 13:27:25,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:25,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442262024] [2022-03-15 13:27:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:26,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:26,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442262024] [2022-03-15 13:27:26,099 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442262024] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:26,099 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:26,099 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:27:26,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171185407] [2022-03-15 13:27:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:26,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:27:26,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:27:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:27:26,100 INFO L87 Difference]: Start difference. First operand 5642 states and 11557 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:29,983 INFO L93 Difference]: Finished difference Result 9534 states and 19599 transitions. [2022-03-15 13:27:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:27:29,983 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:29,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:29,995 INFO L225 Difference]: With dead ends: 9534 [2022-03-15 13:27:29,995 INFO L226 Difference]: Without dead ends: 9534 [2022-03-15 13:27:29,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:27:29,996 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1912 mSDsluCounter, 10513 mSDsCounter, 0 mSdLazyCounter, 3899 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 11116 SdHoareTripleChecker+Invalid, 3944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:29,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1912 Valid, 11116 Invalid, 3944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3899 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:27:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9534 states. [2022-03-15 13:27:30,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9534 to 5644. [2022-03-15 13:27:30,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5644 states, 5641 states have (on average 2.0494593157241625) internal successors, (11561), 5643 states have internal predecessors, (11561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5644 states to 5644 states and 11561 transitions. [2022-03-15 13:27:30,076 INFO L78 Accepts]: Start accepts. Automaton has 5644 states and 11561 transitions. Word has length 99 [2022-03-15 13:27:30,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:30,076 INFO L470 AbstractCegarLoop]: Abstraction has 5644 states and 11561 transitions. [2022-03-15 13:27:30,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:30,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5644 states and 11561 transitions. [2022-03-15 13:27:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:30,081 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:30,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:30,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-03-15 13:27:30,081 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:30,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash -480050425, now seen corresponding path program 74 times [2022-03-15 13:27:30,081 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:30,081 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796859103] [2022-03-15 13:27:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:30,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:30,695 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:30,695 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796859103] [2022-03-15 13:27:30,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796859103] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:30,695 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:30,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:27:30,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684156711] [2022-03-15 13:27:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:30,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:27:30,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:27:30,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:27:30,696 INFO L87 Difference]: Start difference. First operand 5644 states and 11561 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:35,193 INFO L93 Difference]: Finished difference Result 7576 states and 15557 transitions. [2022-03-15 13:27:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:27:35,194 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:35,202 INFO L225 Difference]: With dead ends: 7576 [2022-03-15 13:27:35,202 INFO L226 Difference]: Without dead ends: 7576 [2022-03-15 13:27:35,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:27:35,203 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1467 mSDsluCounter, 10757 mSDsCounter, 0 mSdLazyCounter, 4243 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 11328 SdHoareTripleChecker+Invalid, 4275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:35,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 11328 Invalid, 4275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4243 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:27:35,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2022-03-15 13:27:35,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 5626. [2022-03-15 13:27:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5626 states, 5623 states have (on average 2.049261959807932) internal successors, (11523), 5625 states have internal predecessors, (11523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 11523 transitions. [2022-03-15 13:27:35,259 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 11523 transitions. Word has length 99 [2022-03-15 13:27:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:35,259 INFO L470 AbstractCegarLoop]: Abstraction has 5626 states and 11523 transitions. [2022-03-15 13:27:35,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 11523 transitions. [2022-03-15 13:27:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:35,263 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:35,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:35,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-03-15 13:27:35,264 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:35,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1819693943, now seen corresponding path program 75 times [2022-03-15 13:27:35,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:35,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468597868] [2022-03-15 13:27:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:35,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:35,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468597868] [2022-03-15 13:27:35,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468597868] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:35,768 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:35,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:27:35,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101948962] [2022-03-15 13:27:35,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:35,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:27:35,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:35,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:27:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:27:35,769 INFO L87 Difference]: Start difference. First operand 5626 states and 11523 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:40,643 INFO L93 Difference]: Finished difference Result 9609 states and 19737 transitions. [2022-03-15 13:27:40,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:27:40,643 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:40,654 INFO L225 Difference]: With dead ends: 9609 [2022-03-15 13:27:40,655 INFO L226 Difference]: Without dead ends: 9609 [2022-03-15 13:27:40,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1165, Invalid=5315, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 13:27:40,657 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1748 mSDsluCounter, 11005 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 11632 SdHoareTripleChecker+Invalid, 4076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:40,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1748 Valid, 11632 Invalid, 4076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:27:40,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2022-03-15 13:27:40,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 5627. [2022-03-15 13:27:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5627 states, 5624 states have (on average 2.04925320056899) internal successors, (11525), 5626 states have internal predecessors, (11525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5627 states to 5627 states and 11525 transitions. [2022-03-15 13:27:40,735 INFO L78 Accepts]: Start accepts. Automaton has 5627 states and 11525 transitions. Word has length 99 [2022-03-15 13:27:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:40,735 INFO L470 AbstractCegarLoop]: Abstraction has 5627 states and 11525 transitions. [2022-03-15 13:27:40,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:40,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5627 states and 11525 transitions. [2022-03-15 13:27:40,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:40,740 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:40,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:40,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-03-15 13:27:40,740 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:40,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:40,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1798500871, now seen corresponding path program 76 times [2022-03-15 13:27:40,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:40,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868869978] [2022-03-15 13:27:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:40,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:41,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:41,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868869978] [2022-03-15 13:27:41,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868869978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:41,651 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:41,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:27:41,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209120202] [2022-03-15 13:27:41,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:41,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:27:41,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:41,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:27:41,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:27:41,652 INFO L87 Difference]: Start difference. First operand 5627 states and 11525 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:45,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:45,719 INFO L93 Difference]: Finished difference Result 8594 states and 17640 transitions. [2022-03-15 13:27:45,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:27:45,720 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:45,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:45,730 INFO L225 Difference]: With dead ends: 8594 [2022-03-15 13:27:45,730 INFO L226 Difference]: Without dead ends: 8594 [2022-03-15 13:27:45,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1059, Invalid=5103, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:27:45,731 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 2011 mSDsluCounter, 9559 mSDsCounter, 0 mSdLazyCounter, 3488 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 10154 SdHoareTripleChecker+Invalid, 3532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:45,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2011 Valid, 10154 Invalid, 3532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3488 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:27:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8594 states. [2022-03-15 13:27:45,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 5629. [2022-03-15 13:27:45,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5629 states, 5626 states have (on average 2.049235691432634) internal successors, (11529), 5628 states have internal predecessors, (11529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5629 states to 5629 states and 11529 transitions. [2022-03-15 13:27:45,802 INFO L78 Accepts]: Start accepts. Automaton has 5629 states and 11529 transitions. Word has length 99 [2022-03-15 13:27:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:45,803 INFO L470 AbstractCegarLoop]: Abstraction has 5629 states and 11529 transitions. [2022-03-15 13:27:45,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5629 states and 11529 transitions. [2022-03-15 13:27:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:45,808 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:45,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:45,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-03-15 13:27:45,808 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:45,808 INFO L85 PathProgramCache]: Analyzing trace with hash -35476601, now seen corresponding path program 77 times [2022-03-15 13:27:45,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:45,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725844551] [2022-03-15 13:27:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:45,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:46,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:46,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725844551] [2022-03-15 13:27:46,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725844551] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:46,579 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:46,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:27:46,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198398515] [2022-03-15 13:27:46,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:46,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:27:46,579 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:27:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:27:46,580 INFO L87 Difference]: Start difference. First operand 5629 states and 11529 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:50,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:50,326 INFO L93 Difference]: Finished difference Result 7549 states and 15486 transitions. [2022-03-15 13:27:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:27:50,326 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:50,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:50,333 INFO L225 Difference]: With dead ends: 7549 [2022-03-15 13:27:50,334 INFO L226 Difference]: Without dead ends: 7549 [2022-03-15 13:27:50,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=935, Invalid=4615, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:27:50,334 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1600 mSDsluCounter, 9675 mSDsCounter, 0 mSdLazyCounter, 3672 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 10246 SdHoareTripleChecker+Invalid, 3708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:50,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1600 Valid, 10246 Invalid, 3708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3672 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:27:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7549 states. [2022-03-15 13:27:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7549 to 5618. [2022-03-15 13:27:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 5615 states have (on average 2.049154051647373) internal successors, (11506), 5617 states have internal predecessors, (11506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 11506 transitions. [2022-03-15 13:27:50,388 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 11506 transitions. Word has length 99 [2022-03-15 13:27:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:50,388 INFO L470 AbstractCegarLoop]: Abstraction has 5618 states and 11506 transitions. [2022-03-15 13:27:50,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 11506 transitions. [2022-03-15 13:27:50,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:50,392 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:50,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:50,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-03-15 13:27:50,392 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:50,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash -67592007, now seen corresponding path program 78 times [2022-03-15 13:27:50,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:50,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511511001] [2022-03-15 13:27:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:50,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:51,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:51,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511511001] [2022-03-15 13:27:51,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511511001] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:51,018 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:51,018 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:27:51,018 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469558149] [2022-03-15 13:27:51,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:51,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:27:51,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:51,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:27:51,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:27:51,019 INFO L87 Difference]: Start difference. First operand 5618 states and 11506 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:27:56,004 INFO L93 Difference]: Finished difference Result 7448 states and 15296 transitions. [2022-03-15 13:27:56,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:27:56,005 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:27:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:27:56,015 INFO L225 Difference]: With dead ends: 7448 [2022-03-15 13:27:56,015 INFO L226 Difference]: Without dead ends: 7448 [2022-03-15 13:27:56,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:27:56,016 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1613 mSDsluCounter, 10530 mSDsCounter, 0 mSdLazyCounter, 4088 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 11086 SdHoareTripleChecker+Invalid, 4127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:27:56,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 11086 Invalid, 4127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4088 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 13:27:56,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2022-03-15 13:27:56,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 5618. [2022-03-15 13:27:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 5615 states have (on average 2.049154051647373) internal successors, (11506), 5617 states have internal predecessors, (11506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 11506 transitions. [2022-03-15 13:27:56,105 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 11506 transitions. Word has length 99 [2022-03-15 13:27:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:27:56,105 INFO L470 AbstractCegarLoop]: Abstraction has 5618 states and 11506 transitions. [2022-03-15 13:27:56,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:27:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 11506 transitions. [2022-03-15 13:27:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:27:56,110 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:27:56,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:27:56,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-03-15 13:27:56,111 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:27:56,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:27:56,112 INFO L85 PathProgramCache]: Analyzing trace with hash -160235519, now seen corresponding path program 79 times [2022-03-15 13:27:56,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:27:56,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520410783] [2022-03-15 13:27:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:27:56,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:27:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:27:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:27:56,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:27:56,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520410783] [2022-03-15 13:27:56,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520410783] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:27:56,924 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:27:56,924 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:27:56,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015534664] [2022-03-15 13:27:56,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:27:56,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:27:56,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:27:56,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:27:56,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:27:56,925 INFO L87 Difference]: Start difference. First operand 5618 states and 11506 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:02,003 INFO L93 Difference]: Finished difference Result 9338 states and 19185 transitions. [2022-03-15 13:28:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:28:02,003 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:28:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:02,014 INFO L225 Difference]: With dead ends: 9338 [2022-03-15 13:28:02,014 INFO L226 Difference]: Without dead ends: 9338 [2022-03-15 13:28:02,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:28:02,015 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1885 mSDsluCounter, 10428 mSDsCounter, 0 mSdLazyCounter, 3975 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 11030 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:02,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1885 Valid, 11030 Invalid, 4019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3975 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:28:02,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9338 states. [2022-03-15 13:28:02,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9338 to 5612. [2022-03-15 13:28:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5612 states, 5609 states have (on average 2.0492066321982527) internal successors, (11494), 5611 states have internal predecessors, (11494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 11494 transitions. [2022-03-15 13:28:02,083 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 11494 transitions. Word has length 99 [2022-03-15 13:28:02,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:02,083 INFO L470 AbstractCegarLoop]: Abstraction has 5612 states and 11494 transitions. [2022-03-15 13:28:02,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:02,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 11494 transitions. [2022-03-15 13:28:02,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:28:02,087 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:02,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:02,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-03-15 13:28:02,087 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:28:02,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1046933905, now seen corresponding path program 80 times [2022-03-15 13:28:02,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:02,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881586679] [2022-03-15 13:28:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:02,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:02,855 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:28:02,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881586679] [2022-03-15 13:28:02,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881586679] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:28:02,855 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:28:02,855 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:28:02,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327363444] [2022-03-15 13:28:02,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:28:02,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:28:02,856 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:28:02,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:28:02,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:28:02,856 INFO L87 Difference]: Start difference. First operand 5612 states and 11494 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:07,778 INFO L93 Difference]: Finished difference Result 7448 states and 15279 transitions. [2022-03-15 13:28:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:28:07,778 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:28:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:07,787 INFO L225 Difference]: With dead ends: 7448 [2022-03-15 13:28:07,787 INFO L226 Difference]: Without dead ends: 7448 [2022-03-15 13:28:07,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:28:07,788 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1554 mSDsluCounter, 11077 mSDsCounter, 0 mSdLazyCounter, 4372 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 11647 SdHoareTripleChecker+Invalid, 4410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:07,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1554 Valid, 11647 Invalid, 4410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4372 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 13:28:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2022-03-15 13:28:07,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 5594. [2022-03-15 13:28:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5594 states, 5591 states have (on average 2.049007333214094) internal successors, (11456), 5593 states have internal predecessors, (11456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 11456 transitions. [2022-03-15 13:28:07,853 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 11456 transitions. Word has length 99 [2022-03-15 13:28:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:07,854 INFO L470 AbstractCegarLoop]: Abstraction has 5594 states and 11456 transitions. [2022-03-15 13:28:07,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 11456 transitions. [2022-03-15 13:28:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:28:07,858 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:07,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:07,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-03-15 13:28:07,859 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:28:07,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:07,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1638182441, now seen corresponding path program 81 times [2022-03-15 13:28:07,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:07,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908233778] [2022-03-15 13:28:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:08,621 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:28:08,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908233778] [2022-03-15 13:28:08,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908233778] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:28:08,621 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:28:08,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:28:08,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972635094] [2022-03-15 13:28:08,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:28:08,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:28:08,621 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:28:08,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:28:08,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:28:08,622 INFO L87 Difference]: Start difference. First operand 5594 states and 11456 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:12,136 INFO L93 Difference]: Finished difference Result 7135 states and 14634 transitions. [2022-03-15 13:28:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:28:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:28:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:12,145 INFO L225 Difference]: With dead ends: 7135 [2022-03-15 13:28:12,145 INFO L226 Difference]: Without dead ends: 7135 [2022-03-15 13:28:12,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:28:12,146 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 1489 mSDsluCounter, 9729 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 10283 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:12,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 10283 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:28:12,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7135 states. [2022-03-15 13:28:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7135 to 5370. [2022-03-15 13:28:12,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5370 states, 5367 states have (on average 2.047885224520216) internal successors, (10991), 5369 states have internal predecessors, (10991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 10991 transitions. [2022-03-15 13:28:12,205 INFO L78 Accepts]: Start accepts. Automaton has 5370 states and 10991 transitions. Word has length 99 [2022-03-15 13:28:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:12,205 INFO L470 AbstractCegarLoop]: Abstraction has 5370 states and 10991 transitions. [2022-03-15 13:28:12,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5370 states and 10991 transitions. [2022-03-15 13:28:12,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:28:12,209 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:12,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:12,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-03-15 13:28:12,209 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:28:12,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:12,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1568360313, now seen corresponding path program 82 times [2022-03-15 13:28:12,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:12,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719351444] [2022-03-15 13:28:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:12,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:13,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:28:13,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719351444] [2022-03-15 13:28:13,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719351444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:28:13,122 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:28:13,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:28:13,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155346118] [2022-03-15 13:28:13,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:28:13,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:28:13,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:28:13,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:28:13,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:28:13,123 INFO L87 Difference]: Start difference. First operand 5370 states and 10991 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:18,407 INFO L93 Difference]: Finished difference Result 7501 states and 15407 transitions. [2022-03-15 13:28:18,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:28:18,408 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:28:18,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:18,416 INFO L225 Difference]: With dead ends: 7501 [2022-03-15 13:28:18,417 INFO L226 Difference]: Without dead ends: 7501 [2022-03-15 13:28:18,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:28:18,417 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1623 mSDsluCounter, 10115 mSDsCounter, 0 mSdLazyCounter, 4009 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 10672 SdHoareTripleChecker+Invalid, 4044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 4009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:18,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 10672 Invalid, 4044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 4009 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 13:28:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2022-03-15 13:28:18,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 5397. [2022-03-15 13:28:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5397 states, 5394 states have (on average 2.0482017055988133) internal successors, (11048), 5396 states have internal predecessors, (11048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 11048 transitions. [2022-03-15 13:28:18,484 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 11048 transitions. Word has length 99 [2022-03-15 13:28:18,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:18,485 INFO L470 AbstractCegarLoop]: Abstraction has 5397 states and 11048 transitions. [2022-03-15 13:28:18,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:18,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 11048 transitions. [2022-03-15 13:28:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:28:18,490 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:18,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:18,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-03-15 13:28:18,490 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:28:18,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:18,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1661003825, now seen corresponding path program 83 times [2022-03-15 13:28:18,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:18,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274141086] [2022-03-15 13:28:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:18,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:19,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:28:19,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274141086] [2022-03-15 13:28:19,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274141086] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:28:19,245 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:28:19,245 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:28:19,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157888208] [2022-03-15 13:28:19,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:28:19,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:28:19,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:28:19,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:28:19,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:28:19,246 INFO L87 Difference]: Start difference. First operand 5397 states and 11048 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:24,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:24,561 INFO L93 Difference]: Finished difference Result 9583 states and 19701 transitions. [2022-03-15 13:28:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:28:24,562 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:28:24,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:24,573 INFO L225 Difference]: With dead ends: 9583 [2022-03-15 13:28:24,573 INFO L226 Difference]: Without dead ends: 9583 [2022-03-15 13:28:24,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:28:24,573 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1618 mSDsluCounter, 10933 mSDsCounter, 0 mSdLazyCounter, 4122 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 11536 SdHoareTripleChecker+Invalid, 4154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:24,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1618 Valid, 11536 Invalid, 4154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4122 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 13:28:24,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2022-03-15 13:28:24,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 5399. [2022-03-15 13:28:24,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5399 states, 5396 states have (on average 2.0481838398813936) internal successors, (11052), 5398 states have internal predecessors, (11052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5399 states to 5399 states and 11052 transitions. [2022-03-15 13:28:24,641 INFO L78 Accepts]: Start accepts. Automaton has 5399 states and 11052 transitions. Word has length 99 [2022-03-15 13:28:24,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:24,642 INFO L470 AbstractCegarLoop]: Abstraction has 5399 states and 11052 transitions. [2022-03-15 13:28:24,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5399 states and 11052 transitions. [2022-03-15 13:28:24,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:28:24,646 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:24,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:24,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-03-15 13:28:24,646 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:28:24,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:24,646 INFO L85 PathProgramCache]: Analyzing trace with hash -453834401, now seen corresponding path program 84 times [2022-03-15 13:28:24,646 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:24,647 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507259367] [2022-03-15 13:28:24,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:24,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:25,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:28:25,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507259367] [2022-03-15 13:28:25,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507259367] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:28:25,311 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:28:25,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:28:25,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499190573] [2022-03-15 13:28:25,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:28:25,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:28:25,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:28:25,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:28:25,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:28:25,312 INFO L87 Difference]: Start difference. First operand 5399 states and 11052 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:29,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:29,981 INFO L93 Difference]: Finished difference Result 7605 states and 15617 transitions. [2022-03-15 13:28:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:28:29,981 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:28:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:29,991 INFO L225 Difference]: With dead ends: 7605 [2022-03-15 13:28:29,991 INFO L226 Difference]: Without dead ends: 7605 [2022-03-15 13:28:29,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:28:29,992 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1573 mSDsluCounter, 9073 mSDsCounter, 0 mSdLazyCounter, 3402 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 9644 SdHoareTripleChecker+Invalid, 3441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:29,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 9644 Invalid, 3441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3402 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:28:29,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2022-03-15 13:28:30,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 5381. [2022-03-15 13:28:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5381 states, 5378 states have (on average 2.047973224246932) internal successors, (11014), 5380 states have internal predecessors, (11014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5381 states to 5381 states and 11014 transitions. [2022-03-15 13:28:30,059 INFO L78 Accepts]: Start accepts. Automaton has 5381 states and 11014 transitions. Word has length 99 [2022-03-15 13:28:30,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:30,059 INFO L470 AbstractCegarLoop]: Abstraction has 5381 states and 11014 transitions. [2022-03-15 13:28:30,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:30,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5381 states and 11014 transitions. [2022-03-15 13:28:30,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:28:30,063 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:30,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:30,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-03-15 13:28:30,063 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:28:30,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:30,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1845909967, now seen corresponding path program 85 times [2022-03-15 13:28:30,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:30,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860580690] [2022-03-15 13:28:30,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:30,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:30,775 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:28:30,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860580690] [2022-03-15 13:28:30,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860580690] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:28:30,775 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:28:30,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:28:30,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747430039] [2022-03-15 13:28:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:28:30,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:28:30,775 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:28:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:28:30,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:28:30,776 INFO L87 Difference]: Start difference. First operand 5381 states and 11014 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:36,011 INFO L93 Difference]: Finished difference Result 9616 states and 19753 transitions. [2022-03-15 13:28:36,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:28:36,012 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:28:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:36,024 INFO L225 Difference]: With dead ends: 9616 [2022-03-15 13:28:36,024 INFO L226 Difference]: Without dead ends: 9616 [2022-03-15 13:28:36,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1165, Invalid=5315, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 13:28:36,025 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1704 mSDsluCounter, 11029 mSDsCounter, 0 mSdLazyCounter, 4080 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 11656 SdHoareTripleChecker+Invalid, 4112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:36,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1704 Valid, 11656 Invalid, 4112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 4080 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:28:36,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9616 states. [2022-03-15 13:28:36,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9616 to 5382. [2022-03-15 13:28:36,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5379 states have (on average 2.0479643056330175) internal successors, (11016), 5381 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 11016 transitions. [2022-03-15 13:28:36,099 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 11016 transitions. Word has length 99 [2022-03-15 13:28:36,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:36,100 INFO L470 AbstractCegarLoop]: Abstraction has 5382 states and 11016 transitions. [2022-03-15 13:28:36,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:36,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 11016 transitions. [2022-03-15 13:28:36,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:28:36,104 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:36,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:36,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-03-15 13:28:36,104 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:28:36,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:36,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1824716895, now seen corresponding path program 86 times [2022-03-15 13:28:36,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:36,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980223986] [2022-03-15 13:28:36,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:36,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:36,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:28:36,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980223986] [2022-03-15 13:28:36,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980223986] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:28:36,765 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:28:36,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:28:36,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715751084] [2022-03-15 13:28:36,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:28:36,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:28:36,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:28:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:28:36,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:28:36,766 INFO L87 Difference]: Start difference. First operand 5382 states and 11016 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:41,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:41,200 INFO L93 Difference]: Finished difference Result 8622 states and 17696 transitions. [2022-03-15 13:28:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:28:41,200 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:28:41,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:41,210 INFO L225 Difference]: With dead ends: 8622 [2022-03-15 13:28:41,210 INFO L226 Difference]: Without dead ends: 8622 [2022-03-15 13:28:41,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1059, Invalid=5103, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:28:41,211 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 1919 mSDsluCounter, 10175 mSDsCounter, 0 mSdLazyCounter, 3771 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 10770 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:41,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1919 Valid, 10770 Invalid, 3813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3771 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:28:41,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8622 states. [2022-03-15 13:28:41,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8622 to 5384. [2022-03-15 13:28:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5384 states, 5381 states have (on average 2.047946478349749) internal successors, (11020), 5383 states have internal predecessors, (11020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5384 states to 5384 states and 11020 transitions. [2022-03-15 13:28:41,279 INFO L78 Accepts]: Start accepts. Automaton has 5384 states and 11020 transitions. Word has length 99 [2022-03-15 13:28:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:41,279 INFO L470 AbstractCegarLoop]: Abstraction has 5384 states and 11020 transitions. [2022-03-15 13:28:41,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5384 states and 11020 transitions. [2022-03-15 13:28:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:28:41,283 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:41,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:41,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-03-15 13:28:41,283 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:28:41,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash -9260577, now seen corresponding path program 87 times [2022-03-15 13:28:41,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:41,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470407641] [2022-03-15 13:28:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:41,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:42,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:28:42,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470407641] [2022-03-15 13:28:42,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470407641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:28:42,080 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:28:42,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:28:42,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886170016] [2022-03-15 13:28:42,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:28:42,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:28:42,080 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:28:42,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:28:42,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:28:42,081 INFO L87 Difference]: Start difference. First operand 5384 states and 11020 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:46,808 INFO L93 Difference]: Finished difference Result 7577 states and 15542 transitions. [2022-03-15 13:28:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:28:46,809 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:28:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:46,817 INFO L225 Difference]: With dead ends: 7577 [2022-03-15 13:28:46,817 INFO L226 Difference]: Without dead ends: 7577 [2022-03-15 13:28:46,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=935, Invalid=4615, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:28:46,818 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1499 mSDsluCounter, 9394 mSDsCounter, 0 mSdLazyCounter, 3611 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 9965 SdHoareTripleChecker+Invalid, 3644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:46,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 9965 Invalid, 3644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3611 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:28:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7577 states. [2022-03-15 13:28:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7577 to 5381. [2022-03-15 13:28:46,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5381 states, 5378 states have (on average 2.047973224246932) internal successors, (11014), 5380 states have internal predecessors, (11014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:46,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5381 states to 5381 states and 11014 transitions. [2022-03-15 13:28:46,883 INFO L78 Accepts]: Start accepts. Automaton has 5381 states and 11014 transitions. Word has length 99 [2022-03-15 13:28:46,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:46,883 INFO L470 AbstractCegarLoop]: Abstraction has 5381 states and 11014 transitions. [2022-03-15 13:28:46,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:46,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5381 states and 11014 transitions. [2022-03-15 13:28:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:28:46,888 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:46,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:46,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-03-15 13:28:46,888 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:28:46,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:46,888 INFO L85 PathProgramCache]: Analyzing trace with hash -41375983, now seen corresponding path program 88 times [2022-03-15 13:28:46,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:46,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078358685] [2022-03-15 13:28:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:46,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:47,738 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:28:47,738 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078358685] [2022-03-15 13:28:47,738 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078358685] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:28:47,738 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:28:47,738 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:28:47,738 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724571979] [2022-03-15 13:28:47,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:28:47,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:28:47,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:28:47,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:28:47,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:28:47,739 INFO L87 Difference]: Start difference. First operand 5381 states and 11014 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:52,669 INFO L93 Difference]: Finished difference Result 7844 states and 16129 transitions. [2022-03-15 13:28:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:28:52,670 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:28:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:52,679 INFO L225 Difference]: With dead ends: 7844 [2022-03-15 13:28:52,680 INFO L226 Difference]: Without dead ends: 7844 [2022-03-15 13:28:52,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:28:52,680 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1527 mSDsluCounter, 9953 mSDsCounter, 0 mSdLazyCounter, 3961 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 10515 SdHoareTripleChecker+Invalid, 3994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:52,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1527 Valid, 10515 Invalid, 3994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3961 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 13:28:52,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2022-03-15 13:28:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 5399. [2022-03-15 13:28:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5399 states, 5396 states have (on average 2.0481838398813936) internal successors, (11052), 5398 states have internal predecessors, (11052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5399 states to 5399 states and 11052 transitions. [2022-03-15 13:28:52,780 INFO L78 Accepts]: Start accepts. Automaton has 5399 states and 11052 transitions. Word has length 99 [2022-03-15 13:28:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:52,780 INFO L470 AbstractCegarLoop]: Abstraction has 5399 states and 11052 transitions. [2022-03-15 13:28:52,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:52,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5399 states and 11052 transitions. [2022-03-15 13:28:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:28:52,784 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:52,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:52,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-03-15 13:28:52,784 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:28:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:52,784 INFO L85 PathProgramCache]: Analyzing trace with hash -134019495, now seen corresponding path program 89 times [2022-03-15 13:28:52,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:52,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317161588] [2022-03-15 13:28:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:52,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:28:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:28:53,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:28:53,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317161588] [2022-03-15 13:28:53,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317161588] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:28:53,463 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:28:53,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:28:53,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034409176] [2022-03-15 13:28:53,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:28:53,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:28:53,464 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:28:53,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:28:53,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:28:53,464 INFO L87 Difference]: Start difference. First operand 5399 states and 11052 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:28:59,192 INFO L93 Difference]: Finished difference Result 9814 states and 20180 transitions. [2022-03-15 13:28:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:28:59,192 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:28:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:28:59,204 INFO L225 Difference]: With dead ends: 9814 [2022-03-15 13:28:59,204 INFO L226 Difference]: Without dead ends: 9814 [2022-03-15 13:28:59,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:28:59,205 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 1605 mSDsluCounter, 11034 mSDsCounter, 0 mSdLazyCounter, 4276 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 11642 SdHoareTripleChecker+Invalid, 4316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-15 13:28:59,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 11642 Invalid, 4316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4276 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-15 13:28:59,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9814 states. [2022-03-15 13:28:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9814 to 5401. [2022-03-15 13:28:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5401 states, 5398 states have (on average 2.048165987402742) internal successors, (11056), 5400 states have internal predecessors, (11056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 11056 transitions. [2022-03-15 13:28:59,281 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 11056 transitions. Word has length 99 [2022-03-15 13:28:59,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:28:59,282 INFO L470 AbstractCegarLoop]: Abstraction has 5401 states and 11056 transitions. [2022-03-15 13:28:59,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:28:59,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 11056 transitions. [2022-03-15 13:28:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:28:59,303 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:28:59,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:28:59,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-03-15 13:28:59,304 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:28:59,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:28:59,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1073149929, now seen corresponding path program 90 times [2022-03-15 13:28:59,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:28:59,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594701161] [2022-03-15 13:28:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:28:59,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:28:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:29:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:29:00,114 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:29:00,114 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594701161] [2022-03-15 13:29:00,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594701161] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:29:00,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:29:00,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:29:00,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494413173] [2022-03-15 13:29:00,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:29:00,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:29:00,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:29:00,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:29:00,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:29:00,115 INFO L87 Difference]: Start difference. First operand 5401 states and 11056 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:04,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:29:04,447 INFO L93 Difference]: Finished difference Result 7907 states and 16238 transitions. [2022-03-15 13:29:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:29:04,447 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:29:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:29:04,460 INFO L225 Difference]: With dead ends: 7907 [2022-03-15 13:29:04,461 INFO L226 Difference]: Without dead ends: 7907 [2022-03-15 13:29:04,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:29:04,461 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1543 mSDsluCounter, 10098 mSDsCounter, 0 mSdLazyCounter, 4064 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 10674 SdHoareTripleChecker+Invalid, 4098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:29:04,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 10674 Invalid, 4098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4064 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:29:04,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7907 states. [2022-03-15 13:29:04,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7907 to 5383. [2022-03-15 13:29:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5383 states, 5380 states have (on average 2.0479553903345726) internal successors, (11018), 5382 states have internal predecessors, (11018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5383 states to 5383 states and 11018 transitions. [2022-03-15 13:29:04,539 INFO L78 Accepts]: Start accepts. Automaton has 5383 states and 11018 transitions. Word has length 99 [2022-03-15 13:29:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:29:04,540 INFO L470 AbstractCegarLoop]: Abstraction has 5383 states and 11018 transitions. [2022-03-15 13:29:04,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5383 states and 11018 transitions. [2022-03-15 13:29:04,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:29:04,544 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:29:04,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:29:04,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-03-15 13:29:04,544 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:29:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:29:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1611966417, now seen corresponding path program 91 times [2022-03-15 13:29:04,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:29:04,545 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490849942] [2022-03-15 13:29:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:29:04,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:29:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:29:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:29:05,336 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:29:05,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490849942] [2022-03-15 13:29:05,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490849942] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:29:05,336 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:29:05,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:29:05,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990527911] [2022-03-15 13:29:05,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:29:05,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:29:05,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:29:05,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:29:05,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:29:05,337 INFO L87 Difference]: Start difference. First operand 5383 states and 11018 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:10,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:29:10,243 INFO L93 Difference]: Finished difference Result 7588 states and 15581 transitions. [2022-03-15 13:29:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:29:10,244 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:29:10,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:29:10,252 INFO L225 Difference]: With dead ends: 7588 [2022-03-15 13:29:10,252 INFO L226 Difference]: Without dead ends: 7588 [2022-03-15 13:29:10,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:29:10,253 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1486 mSDsluCounter, 9509 mSDsCounter, 0 mSdLazyCounter, 3702 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 10069 SdHoareTripleChecker+Invalid, 3735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:29:10,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1486 Valid, 10069 Invalid, 3735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3702 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:29:10,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7588 states. [2022-03-15 13:29:10,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7588 to 5381. [2022-03-15 13:29:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5381 states, 5378 states have (on average 2.047973224246932) internal successors, (11014), 5380 states have internal predecessors, (11014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5381 states to 5381 states and 11014 transitions. [2022-03-15 13:29:10,319 INFO L78 Accepts]: Start accepts. Automaton has 5381 states and 11014 transitions. Word has length 99 [2022-03-15 13:29:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:29:10,319 INFO L470 AbstractCegarLoop]: Abstraction has 5381 states and 11014 transitions. [2022-03-15 13:29:10,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5381 states and 11014 transitions. [2022-03-15 13:29:10,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:29:10,323 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:29:10,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:29:10,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-03-15 13:29:10,323 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:29:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:29:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash -795570981, now seen corresponding path program 92 times [2022-03-15 13:29:10,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:29:10,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670237860] [2022-03-15 13:29:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:29:10,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:29:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:29:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:29:11,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:29:11,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670237860] [2022-03-15 13:29:11,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670237860] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:29:11,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:29:11,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:29:11,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155629637] [2022-03-15 13:29:11,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:29:11,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:29:11,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:29:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:29:11,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:29:11,171 INFO L87 Difference]: Start difference. First operand 5381 states and 11014 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:15,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:29:15,975 INFO L93 Difference]: Finished difference Result 7653 states and 15728 transitions. [2022-03-15 13:29:15,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:29:15,975 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:29:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:29:15,984 INFO L225 Difference]: With dead ends: 7653 [2022-03-15 13:29:15,985 INFO L226 Difference]: Without dead ends: 7653 [2022-03-15 13:29:15,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:29:15,985 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1743 mSDsluCounter, 9383 mSDsCounter, 0 mSdLazyCounter, 3705 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 9939 SdHoareTripleChecker+Invalid, 3743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:29:15,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 9939 Invalid, 3743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3705 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:29:15,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7653 states. [2022-03-15 13:29:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7653 to 5403. [2022-03-15 13:29:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5403 states, 5400 states have (on average 2.0481481481481483) internal successors, (11060), 5402 states have internal predecessors, (11060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 11060 transitions. [2022-03-15 13:29:16,053 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 11060 transitions. Word has length 99 [2022-03-15 13:29:16,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:29:16,053 INFO L470 AbstractCegarLoop]: Abstraction has 5403 states and 11060 transitions. [2022-03-15 13:29:16,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:16,053 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 11060 transitions. [2022-03-15 13:29:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:29:16,057 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:29:16,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:29:16,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-03-15 13:29:16,058 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:29:16,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:29:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash -888214493, now seen corresponding path program 93 times [2022-03-15 13:29:16,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:29:16,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263010179] [2022-03-15 13:29:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:29:16,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:29:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:29:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:29:16,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:29:16,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263010179] [2022-03-15 13:29:16,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263010179] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:29:16,910 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:29:16,910 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:29:16,910 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917508319] [2022-03-15 13:29:16,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:29:16,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:29:16,910 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:29:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:29:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:29:16,911 INFO L87 Difference]: Start difference. First operand 5403 states and 11060 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:29:22,202 INFO L93 Difference]: Finished difference Result 9623 states and 19779 transitions. [2022-03-15 13:29:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:29:22,202 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:29:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:29:22,217 INFO L225 Difference]: With dead ends: 9623 [2022-03-15 13:29:22,217 INFO L226 Difference]: Without dead ends: 9623 [2022-03-15 13:29:22,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:29:22,221 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1656 mSDsluCounter, 10884 mSDsCounter, 0 mSdLazyCounter, 4111 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 11486 SdHoareTripleChecker+Invalid, 4152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:29:22,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1656 Valid, 11486 Invalid, 4152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 4111 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 13:29:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9623 states. [2022-03-15 13:29:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9623 to 5405. [2022-03-15 13:29:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5405 states, 5402 states have (on average 2.048130322102925) internal successors, (11064), 5404 states have internal predecessors, (11064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:22,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 11064 transitions. [2022-03-15 13:29:22,339 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 11064 transitions. Word has length 99 [2022-03-15 13:29:22,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:29:22,339 INFO L470 AbstractCegarLoop]: Abstraction has 5405 states and 11064 transitions. [2022-03-15 13:29:22,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 11064 transitions. [2022-03-15 13:29:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:29:22,344 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:29:22,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:29:22,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-03-15 13:29:22,345 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:29:22,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:29:22,345 INFO L85 PathProgramCache]: Analyzing trace with hash 318954931, now seen corresponding path program 94 times [2022-03-15 13:29:22,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:29:22,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629779842] [2022-03-15 13:29:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:29:22,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:29:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:29:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:29:23,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:29:23,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629779842] [2022-03-15 13:29:23,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629779842] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:29:23,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:29:23,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:29:23,160 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231676344] [2022-03-15 13:29:23,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:29:23,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:29:23,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:29:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:29:23,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:29:23,160 INFO L87 Difference]: Start difference. First operand 5405 states and 11064 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:27,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:29:27,515 INFO L93 Difference]: Finished difference Result 7716 states and 15837 transitions. [2022-03-15 13:29:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:29:27,515 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:29:27,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:29:27,525 INFO L225 Difference]: With dead ends: 7716 [2022-03-15 13:29:27,525 INFO L226 Difference]: Without dead ends: 7716 [2022-03-15 13:29:27,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:29:27,526 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1529 mSDsluCounter, 9562 mSDsCounter, 0 mSdLazyCounter, 3772 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 10132 SdHoareTripleChecker+Invalid, 3806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:29:27,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 10132 Invalid, 3806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3772 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:29:27,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7716 states. [2022-03-15 13:29:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7716 to 5387. [2022-03-15 13:29:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5387 states, 5384 states have (on average 2.0479197622585437) internal successors, (11026), 5386 states have internal predecessors, (11026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:27,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5387 states to 5387 states and 11026 transitions. [2022-03-15 13:29:27,600 INFO L78 Accepts]: Start accepts. Automaton has 5387 states and 11026 transitions. Word has length 99 [2022-03-15 13:29:27,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:29:27,600 INFO L470 AbstractCegarLoop]: Abstraction has 5387 states and 11026 transitions. [2022-03-15 13:29:27,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:27,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5387 states and 11026 transitions. [2022-03-15 13:29:27,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:29:27,604 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:29:27,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:29:27,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-03-15 13:29:27,605 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:29:27,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:29:27,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1928805881, now seen corresponding path program 95 times [2022-03-15 13:29:27,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:29:27,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763588065] [2022-03-15 13:29:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:29:27,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:29:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:29:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:29:28,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:29:28,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763588065] [2022-03-15 13:29:28,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763588065] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:29:28,232 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:29:28,232 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:29:28,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122518615] [2022-03-15 13:29:28,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:29:28,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:29:28,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:29:28,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:29:28,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:29:28,233 INFO L87 Difference]: Start difference. First operand 5387 states and 11026 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:29:31,872 INFO L93 Difference]: Finished difference Result 7738 states and 15898 transitions. [2022-03-15 13:29:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:29:31,872 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:29:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:29:31,882 INFO L225 Difference]: With dead ends: 7738 [2022-03-15 13:29:31,882 INFO L226 Difference]: Without dead ends: 7738 [2022-03-15 13:29:31,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:29:31,882 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1526 mSDsluCounter, 9776 mSDsCounter, 0 mSdLazyCounter, 3956 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 10336 SdHoareTripleChecker+Invalid, 3988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:29:31,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 10336 Invalid, 3988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3956 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:29:31,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7738 states. [2022-03-15 13:29:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7738 to 5385. [2022-03-15 13:29:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 5382 states have (on average 2.0479375696767) internal successors, (11022), 5384 states have internal predecessors, (11022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:31,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 11022 transitions. [2022-03-15 13:29:31,951 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 11022 transitions. Word has length 99 [2022-03-15 13:29:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:29:31,951 INFO L470 AbstractCegarLoop]: Abstraction has 5385 states and 11022 transitions. [2022-03-15 13:29:31,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 11022 transitions. [2022-03-15 13:29:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:29:31,956 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:29:31,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:29:31,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-03-15 13:29:31,956 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:29:31,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:29:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash -253644005, now seen corresponding path program 96 times [2022-03-15 13:29:31,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:29:31,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563665209] [2022-03-15 13:29:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:29:31,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:29:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:29:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:29:32,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:29:32,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563665209] [2022-03-15 13:29:32,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563665209] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:29:32,765 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:29:32,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:29:32,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188611233] [2022-03-15 13:29:32,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:29:32,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:29:32,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:29:32,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:29:32,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:29:32,766 INFO L87 Difference]: Start difference. First operand 5385 states and 11022 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:37,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:29:37,537 INFO L93 Difference]: Finished difference Result 7395 states and 15176 transitions. [2022-03-15 13:29:37,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:29:37,538 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:29:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:29:37,546 INFO L225 Difference]: With dead ends: 7395 [2022-03-15 13:29:37,546 INFO L226 Difference]: Without dead ends: 7395 [2022-03-15 13:29:37,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:29:37,546 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1550 mSDsluCounter, 10089 mSDsCounter, 0 mSdLazyCounter, 4096 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 10642 SdHoareTripleChecker+Invalid, 4130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:29:37,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 10642 Invalid, 4130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4096 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:29:37,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7395 states. [2022-03-15 13:29:37,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7395 to 5381. [2022-03-15 13:29:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5381 states, 5378 states have (on average 2.047973224246932) internal successors, (11014), 5380 states have internal predecessors, (11014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5381 states to 5381 states and 11014 transitions. [2022-03-15 13:29:37,610 INFO L78 Accepts]: Start accepts. Automaton has 5381 states and 11014 transitions. Word has length 99 [2022-03-15 13:29:37,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:29:37,611 INFO L470 AbstractCegarLoop]: Abstraction has 5381 states and 11014 transitions. [2022-03-15 13:29:37,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:37,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5381 states and 11014 transitions. [2022-03-15 13:29:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:29:37,615 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:29:37,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:29:37,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-03-15 13:29:37,615 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:29:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:29:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1362747807, now seen corresponding path program 97 times [2022-03-15 13:29:37,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:29:37,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241584512] [2022-03-15 13:29:37,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:29:37,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:29:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:29:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:29:38,511 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:29:38,511 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241584512] [2022-03-15 13:29:38,511 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241584512] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:29:38,511 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:29:38,511 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:29:38,511 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439865067] [2022-03-15 13:29:38,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:29:38,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:29:38,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:29:38,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:29:38,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:29:38,512 INFO L87 Difference]: Start difference. First operand 5381 states and 11014 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:29:43,353 INFO L93 Difference]: Finished difference Result 7781 states and 15987 transitions. [2022-03-15 13:29:43,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:29:43,354 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:29:43,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:29:43,366 INFO L225 Difference]: With dead ends: 7781 [2022-03-15 13:29:43,366 INFO L226 Difference]: Without dead ends: 7781 [2022-03-15 13:29:43,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:29:43,367 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1589 mSDsluCounter, 9223 mSDsCounter, 0 mSdLazyCounter, 3676 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 9785 SdHoareTripleChecker+Invalid, 3712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:29:43,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 9785 Invalid, 3712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3676 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:29:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7781 states. [2022-03-15 13:29:43,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7781 to 5411. [2022-03-15 13:29:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5411 states, 5408 states have (on average 2.0482618343195265) internal successors, (11077), 5410 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 11077 transitions. [2022-03-15 13:29:43,469 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 11077 transitions. Word has length 99 [2022-03-15 13:29:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:29:43,469 INFO L470 AbstractCegarLoop]: Abstraction has 5411 states and 11077 transitions. [2022-03-15 13:29:43,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 11077 transitions. [2022-03-15 13:29:43,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:29:43,474 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:29:43,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:29:43,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-03-15 13:29:43,475 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:29:43,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:29:43,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1270104295, now seen corresponding path program 98 times [2022-03-15 13:29:43,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:29:43,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553920476] [2022-03-15 13:29:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:29:43,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:29:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:29:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:29:44,256 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:29:44,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553920476] [2022-03-15 13:29:44,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553920476] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:29:44,256 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:29:44,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:29:44,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104301639] [2022-03-15 13:29:44,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:29:44,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:29:44,257 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:29:44,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:29:44,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:29:44,257 INFO L87 Difference]: Start difference. First operand 5411 states and 11077 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:29:49,634 INFO L93 Difference]: Finished difference Result 9863 states and 20281 transitions. [2022-03-15 13:29:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:29:49,634 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:29:49,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:29:49,648 INFO L225 Difference]: With dead ends: 9863 [2022-03-15 13:29:49,648 INFO L226 Difference]: Without dead ends: 9863 [2022-03-15 13:29:49,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:29:49,649 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 1620 mSDsluCounter, 10180 mSDsCounter, 0 mSdLazyCounter, 3863 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 10788 SdHoareTripleChecker+Invalid, 3895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:29:49,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1620 Valid, 10788 Invalid, 3895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3863 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:29:49,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9863 states. [2022-03-15 13:29:49,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9863 to 5413. [2022-03-15 13:29:49,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5413 states, 5410 states have (on average 2.0482439926062845) internal successors, (11081), 5412 states have internal predecessors, (11081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 11081 transitions. [2022-03-15 13:29:49,727 INFO L78 Accepts]: Start accepts. Automaton has 5413 states and 11081 transitions. Word has length 99 [2022-03-15 13:29:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:29:49,728 INFO L470 AbstractCegarLoop]: Abstraction has 5413 states and 11081 transitions. [2022-03-15 13:29:49,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5413 states and 11081 transitions. [2022-03-15 13:29:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:29:49,732 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:29:49,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:29:49,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-03-15 13:29:49,732 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:29:49,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:29:49,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1817693577, now seen corresponding path program 99 times [2022-03-15 13:29:49,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:29:49,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974264482] [2022-03-15 13:29:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:29:49,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:29:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:29:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:29:50,603 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:29:50,603 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974264482] [2022-03-15 13:29:50,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974264482] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:29:50,603 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:29:50,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:29:50,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145646439] [2022-03-15 13:29:50,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:29:50,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:29:50,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:29:50,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:29:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:29:50,604 INFO L87 Difference]: Start difference. First operand 5413 states and 11081 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:55,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:29:55,193 INFO L93 Difference]: Finished difference Result 7885 states and 16197 transitions. [2022-03-15 13:29:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:29:55,194 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:29:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:29:55,205 INFO L225 Difference]: With dead ends: 7885 [2022-03-15 13:29:55,205 INFO L226 Difference]: Without dead ends: 7885 [2022-03-15 13:29:55,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:29:55,206 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1526 mSDsluCounter, 10523 mSDsCounter, 0 mSdLazyCounter, 4109 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 11099 SdHoareTripleChecker+Invalid, 4147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:29:55,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 11099 Invalid, 4147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4109 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:29:55,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7885 states. [2022-03-15 13:29:55,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7885 to 5395. [2022-03-15 13:29:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5395 states, 5392 states have (on average 2.0480341246290803) internal successors, (11043), 5394 states have internal predecessors, (11043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5395 states to 5395 states and 11043 transitions. [2022-03-15 13:29:55,287 INFO L78 Accepts]: Start accepts. Automaton has 5395 states and 11043 transitions. Word has length 99 [2022-03-15 13:29:55,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:29:55,287 INFO L470 AbstractCegarLoop]: Abstraction has 5395 states and 11043 transitions. [2022-03-15 13:29:55,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:29:55,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5395 states and 11043 transitions. [2022-03-15 13:29:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:29:55,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:29:55,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:29:55,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-03-15 13:29:55,292 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:29:55,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:29:55,292 INFO L85 PathProgramCache]: Analyzing trace with hash 482050791, now seen corresponding path program 100 times [2022-03-15 13:29:55,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:29:55,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142772490] [2022-03-15 13:29:55,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:29:55,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:29:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:29:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:29:56,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:29:56,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142772490] [2022-03-15 13:29:56,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142772490] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:29:56,020 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:29:56,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:29:56,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307464655] [2022-03-15 13:29:56,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:29:56,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:29:56,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:29:56,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:29:56,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:29:56,021 INFO L87 Difference]: Start difference. First operand 5395 states and 11043 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:30:01,625 INFO L93 Difference]: Finished difference Result 9896 states and 20333 transitions. [2022-03-15 13:30:01,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:30:01,625 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:30:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:30:01,638 INFO L225 Difference]: With dead ends: 9896 [2022-03-15 13:30:01,638 INFO L226 Difference]: Without dead ends: 9896 [2022-03-15 13:30:01,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1165, Invalid=5315, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 13:30:01,639 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 1763 mSDsluCounter, 11789 mSDsCounter, 0 mSdLazyCounter, 4350 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 12421 SdHoareTripleChecker+Invalid, 4385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 4350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:30:01,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1763 Valid, 12421 Invalid, 4385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 4350 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 13:30:01,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9896 states. [2022-03-15 13:30:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9896 to 5396. [2022-03-15 13:30:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5396 states, 5393 states have (on average 2.0480252178750233) internal successors, (11045), 5395 states have internal predecessors, (11045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 11045 transitions. [2022-03-15 13:30:01,718 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 11045 transitions. Word has length 99 [2022-03-15 13:30:01,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:30:01,718 INFO L470 AbstractCegarLoop]: Abstraction has 5396 states and 11045 transitions. [2022-03-15 13:30:01,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 11045 transitions. [2022-03-15 13:30:01,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:30:01,723 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:30:01,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:30:01,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-03-15 13:30:01,725 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:30:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:30:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash 460857719, now seen corresponding path program 101 times [2022-03-15 13:30:01,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:30:01,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564565555] [2022-03-15 13:30:01,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:30:01,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:30:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:30:02,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:30:02,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:30:02,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564565555] [2022-03-15 13:30:02,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564565555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:30:02,472 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:30:02,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:30:02,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140093218] [2022-03-15 13:30:02,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:30:02,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:30:02,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:30:02,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:30:02,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:30:02,473 INFO L87 Difference]: Start difference. First operand 5396 states and 11045 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:07,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:30:07,576 INFO L93 Difference]: Finished difference Result 8902 states and 18276 transitions. [2022-03-15 13:30:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:30:07,577 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:30:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:30:07,586 INFO L225 Difference]: With dead ends: 8902 [2022-03-15 13:30:07,586 INFO L226 Difference]: Without dead ends: 8902 [2022-03-15 13:30:07,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1044, Invalid=4962, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:30:07,589 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1812 mSDsluCounter, 9936 mSDsCounter, 0 mSdLazyCounter, 3755 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 10536 SdHoareTripleChecker+Invalid, 3790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:30:07,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1812 Valid, 10536 Invalid, 3790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3755 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:30:07,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8902 states. [2022-03-15 13:30:07,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8902 to 5398. [2022-03-15 13:30:07,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 5395 states have (on average 2.0480074142724747) internal successors, (11049), 5397 states have internal predecessors, (11049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 11049 transitions. [2022-03-15 13:30:07,653 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 11049 transitions. Word has length 99 [2022-03-15 13:30:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:30:07,653 INFO L470 AbstractCegarLoop]: Abstraction has 5398 states and 11049 transitions. [2022-03-15 13:30:07,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 11049 transitions. [2022-03-15 13:30:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:30:07,657 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:30:07,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:30:07,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-03-15 13:30:07,658 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:30:07,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:30:07,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1373119753, now seen corresponding path program 102 times [2022-03-15 13:30:07,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:30:07,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388623555] [2022-03-15 13:30:07,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:30:07,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:30:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:30:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:30:08,384 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:30:08,384 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388623555] [2022-03-15 13:30:08,384 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388623555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:30:08,384 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:30:08,384 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:30:08,384 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649010142] [2022-03-15 13:30:08,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:30:08,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:30:08,385 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:30:08,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:30:08,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:30:08,385 INFO L87 Difference]: Start difference. First operand 5398 states and 11049 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:30:13,182 INFO L93 Difference]: Finished difference Result 7857 states and 16122 transitions. [2022-03-15 13:30:13,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:30:13,182 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:30:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:30:13,193 INFO L225 Difference]: With dead ends: 7857 [2022-03-15 13:30:13,193 INFO L226 Difference]: Without dead ends: 7857 [2022-03-15 13:30:13,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=935, Invalid=4615, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:30:13,195 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1634 mSDsluCounter, 10092 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 10668 SdHoareTripleChecker+Invalid, 3874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:30:13,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1634 Valid, 10668 Invalid, 3874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3836 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:30:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7857 states. [2022-03-15 13:30:13,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7857 to 5387. [2022-03-15 13:30:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5387 states, 5384 states have (on average 2.0479197622585437) internal successors, (11026), 5386 states have internal predecessors, (11026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5387 states to 5387 states and 11026 transitions. [2022-03-15 13:30:13,290 INFO L78 Accepts]: Start accepts. Automaton has 5387 states and 11026 transitions. Word has length 99 [2022-03-15 13:30:13,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:30:13,290 INFO L470 AbstractCegarLoop]: Abstraction has 5387 states and 11026 transitions. [2022-03-15 13:30:13,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:13,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5387 states and 11026 transitions. [2022-03-15 13:30:13,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:30:13,295 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:30:13,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:30:13,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-03-15 13:30:13,295 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:30:13,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:30:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1405235159, now seen corresponding path program 103 times [2022-03-15 13:30:13,295 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:30:13,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858267462] [2022-03-15 13:30:13,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:30:13,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:30:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:30:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:30:14,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:30:14,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858267462] [2022-03-15 13:30:14,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858267462] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:30:14,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:30:14,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:30:14,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173244043] [2022-03-15 13:30:14,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:30:14,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:30:14,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:30:14,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:30:14,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:30:14,112 INFO L87 Difference]: Start difference. First operand 5387 states and 11026 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:30:17,750 INFO L93 Difference]: Finished difference Result 8124 states and 16709 transitions. [2022-03-15 13:30:17,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:30:17,750 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:30:17,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:30:17,761 INFO L225 Difference]: With dead ends: 8124 [2022-03-15 13:30:17,761 INFO L226 Difference]: Without dead ends: 8124 [2022-03-15 13:30:17,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:30:17,762 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1668 mSDsluCounter, 9523 mSDsCounter, 0 mSdLazyCounter, 3816 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 10090 SdHoareTripleChecker+Invalid, 3851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:30:17,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1668 Valid, 10090 Invalid, 3851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3816 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:30:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8124 states. [2022-03-15 13:30:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8124 to 5405. [2022-03-15 13:30:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5405 states, 5402 states have (on average 2.048130322102925) internal successors, (11064), 5404 states have internal predecessors, (11064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 11064 transitions. [2022-03-15 13:30:17,833 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 11064 transitions. Word has length 99 [2022-03-15 13:30:17,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:30:17,833 INFO L470 AbstractCegarLoop]: Abstraction has 5405 states and 11064 transitions. [2022-03-15 13:30:17,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 11064 transitions. [2022-03-15 13:30:17,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:30:17,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:30:17,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:30:17,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-03-15 13:30:17,838 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:30:17,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:30:17,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1497878671, now seen corresponding path program 104 times [2022-03-15 13:30:17,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:30:17,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152718175] [2022-03-15 13:30:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:30:17,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:30:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:30:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:30:18,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:30:18,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152718175] [2022-03-15 13:30:18,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152718175] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:30:18,326 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:30:18,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:30:18,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622397691] [2022-03-15 13:30:18,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:30:18,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:30:18,327 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:30:18,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:30:18,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:30:18,327 INFO L87 Difference]: Start difference. First operand 5405 states and 11064 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:21,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:30:21,823 INFO L93 Difference]: Finished difference Result 10094 states and 20760 transitions. [2022-03-15 13:30:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:30:21,823 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:30:21,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:30:21,836 INFO L225 Difference]: With dead ends: 10094 [2022-03-15 13:30:21,836 INFO L226 Difference]: Without dead ends: 10094 [2022-03-15 13:30:21,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:30:21,837 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 1646 mSDsluCounter, 10578 mSDsCounter, 0 mSdLazyCounter, 4013 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 11191 SdHoareTripleChecker+Invalid, 4047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:30:21,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1646 Valid, 11191 Invalid, 4047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4013 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:30:21,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10094 states. [2022-03-15 13:30:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10094 to 5407. [2022-03-15 13:30:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5407 states, 5404 states have (on average 2.0481125092524057) internal successors, (11068), 5406 states have internal predecessors, (11068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 11068 transitions. [2022-03-15 13:30:21,917 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 11068 transitions. Word has length 99 [2022-03-15 13:30:21,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:30:21,918 INFO L470 AbstractCegarLoop]: Abstraction has 5407 states and 11068 transitions. [2022-03-15 13:30:21,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:21,918 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 11068 transitions. [2022-03-15 13:30:21,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:30:21,922 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:30:21,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:30:21,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-03-15 13:30:21,922 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:30:21,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:30:21,923 INFO L85 PathProgramCache]: Analyzing trace with hash -290709247, now seen corresponding path program 105 times [2022-03-15 13:30:21,923 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:30:21,923 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445208073] [2022-03-15 13:30:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:30:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:30:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:30:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:30:22,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:30:22,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445208073] [2022-03-15 13:30:22,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445208073] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:30:22,544 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:30:22,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:30:22,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773650135] [2022-03-15 13:30:22,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:30:22,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:30:22,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:30:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:30:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:30:22,545 INFO L87 Difference]: Start difference. First operand 5407 states and 11068 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:26,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:30:26,700 INFO L93 Difference]: Finished difference Result 8187 states and 16818 transitions. [2022-03-15 13:30:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:30:26,700 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:30:26,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:30:26,710 INFO L225 Difference]: With dead ends: 8187 [2022-03-15 13:30:26,710 INFO L226 Difference]: Without dead ends: 8187 [2022-03-15 13:30:26,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:30:26,710 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 1645 mSDsluCounter, 9609 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 10190 SdHoareTripleChecker+Invalid, 3753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:30:26,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1645 Valid, 10190 Invalid, 3753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:30:26,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-03-15 13:30:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 5389. [2022-03-15 13:30:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5389 states, 5386 states have (on average 2.0479019680653545) internal successors, (11030), 5388 states have internal predecessors, (11030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5389 states to 5389 states and 11030 transitions. [2022-03-15 13:30:26,778 INFO L78 Accepts]: Start accepts. Automaton has 5389 states and 11030 transitions. Word has length 99 [2022-03-15 13:30:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:30:26,779 INFO L470 AbstractCegarLoop]: Abstraction has 5389 states and 11030 transitions. [2022-03-15 13:30:26,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5389 states and 11030 transitions. [2022-03-15 13:30:26,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:30:26,783 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:30:26,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:30:26,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-03-15 13:30:26,783 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:30:26,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:30:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1319141703, now seen corresponding path program 106 times [2022-03-15 13:30:26,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:30:26,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191000318] [2022-03-15 13:30:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:30:26,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:30:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:30:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:30:27,311 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:30:27,311 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191000318] [2022-03-15 13:30:27,311 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191000318] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:30:27,311 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:30:27,311 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:30:27,311 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573875676] [2022-03-15 13:30:27,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:30:27,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:30:27,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:30:27,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:30:27,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:30:27,312 INFO L87 Difference]: Start difference. First operand 5389 states and 11030 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:31,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:30:31,181 INFO L93 Difference]: Finished difference Result 7868 states and 16161 transitions. [2022-03-15 13:30:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:30:31,181 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:30:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:30:31,190 INFO L225 Difference]: With dead ends: 7868 [2022-03-15 13:30:31,190 INFO L226 Difference]: Without dead ends: 7868 [2022-03-15 13:30:31,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:30:31,191 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1455 mSDsluCounter, 9934 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 10499 SdHoareTripleChecker+Invalid, 4041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:30:31,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1455 Valid, 10499 Invalid, 4041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4010 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:30:31,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7868 states. [2022-03-15 13:30:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7868 to 5386. [2022-03-15 13:30:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5383 states have (on average 2.04792866431358) internal successors, (11024), 5385 states have internal predecessors, (11024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 11024 transitions. [2022-03-15 13:30:31,252 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 11024 transitions. Word has length 99 [2022-03-15 13:30:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:30:31,252 INFO L470 AbstractCegarLoop]: Abstraction has 5386 states and 11024 transitions. [2022-03-15 13:30:31,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 11024 transitions. [2022-03-15 13:30:31,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:30:31,256 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:30:31,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:30:31,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-03-15 13:30:31,256 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:30:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:30:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2135537139, now seen corresponding path program 107 times [2022-03-15 13:30:31,257 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:30:31,257 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802509695] [2022-03-15 13:30:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:30:31,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:30:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:30:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:30:32,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:30:32,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802509695] [2022-03-15 13:30:32,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802509695] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:30:32,021 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:30:32,022 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:30:32,022 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929688662] [2022-03-15 13:30:32,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:30:32,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:30:32,022 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:30:32,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:30:32,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:30:32,022 INFO L87 Difference]: Start difference. First operand 5386 states and 11024 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:36,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:30:36,716 INFO L93 Difference]: Finished difference Result 8181 states and 16823 transitions. [2022-03-15 13:30:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:30:36,716 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:30:36,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:30:36,727 INFO L225 Difference]: With dead ends: 8181 [2022-03-15 13:30:36,727 INFO L226 Difference]: Without dead ends: 8181 [2022-03-15 13:30:36,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:30:36,728 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1617 mSDsluCounter, 8889 mSDsCounter, 0 mSdLazyCounter, 3470 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 9456 SdHoareTripleChecker+Invalid, 3505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:30:36,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 9456 Invalid, 3505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3470 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:30:36,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8181 states. [2022-03-15 13:30:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8181 to 5408. [2022-03-15 13:30:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 5405 states have (on average 2.048103607770583) internal successors, (11070), 5407 states have internal predecessors, (11070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 11070 transitions. [2022-03-15 13:30:36,795 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 11070 transitions. Word has length 99 [2022-03-15 13:30:36,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:30:36,795 INFO L470 AbstractCegarLoop]: Abstraction has 5408 states and 11070 transitions. [2022-03-15 13:30:36,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:36,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 11070 transitions. [2022-03-15 13:30:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:30:36,799 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:30:36,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:30:36,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-03-15 13:30:36,800 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:30:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:30:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2042893627, now seen corresponding path program 108 times [2022-03-15 13:30:36,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:30:36,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325276474] [2022-03-15 13:30:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:30:36,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:30:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:30:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:30:37,685 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:30:37,685 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325276474] [2022-03-15 13:30:37,685 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325276474] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:30:37,685 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:30:37,685 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-03-15 13:30:37,685 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130940402] [2022-03-15 13:30:37,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:30:37,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 13:30:37,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:30:37,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 13:30:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 13:30:37,686 INFO L87 Difference]: Start difference. First operand 5408 states and 11070 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:44,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:30:44,227 INFO L93 Difference]: Finished difference Result 10296 states and 21169 transitions. [2022-03-15 13:30:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 13:30:44,228 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:30:44,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:30:44,240 INFO L225 Difference]: With dead ends: 10296 [2022-03-15 13:30:44,240 INFO L226 Difference]: Without dead ends: 10296 [2022-03-15 13:30:44,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1440 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1415, Invalid=6417, Unknown=0, NotChecked=0, Total=7832 [2022-03-15 13:30:44,241 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 1912 mSDsluCounter, 11795 mSDsCounter, 0 mSdLazyCounter, 4516 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 12457 SdHoareTripleChecker+Invalid, 4562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:30:44,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1912 Valid, 12457 Invalid, 4562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4516 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 13:30:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10296 states. [2022-03-15 13:30:44,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10296 to 5410. [2022-03-15 13:30:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5410 states, 5407 states have (on average 2.048085814684668) internal successors, (11074), 5409 states have internal predecessors, (11074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 11074 transitions. [2022-03-15 13:30:44,353 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 11074 transitions. Word has length 99 [2022-03-15 13:30:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:30:44,353 INFO L470 AbstractCegarLoop]: Abstraction has 5410 states and 11074 transitions. [2022-03-15 13:30:44,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 11074 transitions. [2022-03-15 13:30:44,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:30:44,357 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:30:44,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:30:44,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-03-15 13:30:44,357 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:30:44,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:30:44,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1044904245, now seen corresponding path program 109 times [2022-03-15 13:30:44,358 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:30:44,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501826980] [2022-03-15 13:30:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:30:44,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:30:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:30:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:30:45,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:30:45,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501826980] [2022-03-15 13:30:45,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501826980] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:30:45,225 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:30:45,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:30:45,226 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001297225] [2022-03-15 13:30:45,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:30:45,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:30:45,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:30:45,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:30:45,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:30:45,226 INFO L87 Difference]: Start difference. First operand 5410 states and 11074 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:30:50,324 INFO L93 Difference]: Finished difference Result 8244 states and 16932 transitions. [2022-03-15 13:30:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:30:50,325 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:30:50,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:30:50,335 INFO L225 Difference]: With dead ends: 8244 [2022-03-15 13:30:50,335 INFO L226 Difference]: Without dead ends: 8244 [2022-03-15 13:30:50,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:30:50,336 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 1690 mSDsluCounter, 10914 mSDsCounter, 0 mSdLazyCounter, 4382 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 11495 SdHoareTripleChecker+Invalid, 4425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:30:50,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1690 Valid, 11495 Invalid, 4425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4382 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 13:30:50,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2022-03-15 13:30:50,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 5392. [2022-03-15 13:30:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5389 states have (on average 2.0478753015401745) internal successors, (11036), 5391 states have internal predecessors, (11036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 11036 transitions. [2022-03-15 13:30:50,399 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 11036 transitions. Word has length 99 [2022-03-15 13:30:50,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:30:50,399 INFO L470 AbstractCegarLoop]: Abstraction has 5392 states and 11036 transitions. [2022-03-15 13:30:50,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:50,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 11036 transitions. [2022-03-15 13:30:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:30:50,403 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:30:50,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:30:50,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-03-15 13:30:50,404 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:30:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:30:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash 564946705, now seen corresponding path program 110 times [2022-03-15 13:30:50,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:30:50,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030245433] [2022-03-15 13:30:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:30:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:30:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:30:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:30:51,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:30:51,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030245433] [2022-03-15 13:30:51,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030245433] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:30:51,233 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:30:51,233 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:30:51,233 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188522517] [2022-03-15 13:30:51,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:30:51,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:30:51,233 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:30:51,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:30:51,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:30:51,234 INFO L87 Difference]: Start difference. First operand 5392 states and 11036 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:30:55,643 INFO L93 Difference]: Finished difference Result 8266 states and 16993 transitions. [2022-03-15 13:30:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:30:55,643 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:30:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:30:55,654 INFO L225 Difference]: With dead ends: 8266 [2022-03-15 13:30:55,654 INFO L226 Difference]: Without dead ends: 8266 [2022-03-15 13:30:55,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:30:55,655 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1641 mSDsluCounter, 9007 mSDsCounter, 0 mSdLazyCounter, 3639 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 9578 SdHoareTripleChecker+Invalid, 3674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:30:55,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1641 Valid, 9578 Invalid, 3674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3639 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:30:55,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2022-03-15 13:30:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 5390. [2022-03-15 13:30:55,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5387 states have (on average 2.0478930759235197) internal successors, (11032), 5389 states have internal predecessors, (11032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 11032 transitions. [2022-03-15 13:30:55,730 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 11032 transitions. Word has length 99 [2022-03-15 13:30:55,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:30:55,731 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 11032 transitions. [2022-03-15 13:30:55,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:30:55,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 11032 transitions. [2022-03-15 13:30:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:30:55,735 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:30:55,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:30:55,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-03-15 13:30:55,735 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:30:55,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:30:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1617503181, now seen corresponding path program 111 times [2022-03-15 13:30:55,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:30:55,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589651874] [2022-03-15 13:30:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:30:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:30:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:30:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:30:56,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:30:56,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589651874] [2022-03-15 13:30:56,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589651874] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:30:56,460 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:30:56,460 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-03-15 13:30:56,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435058184] [2022-03-15 13:30:56,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:30:56,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 13:30:56,461 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:30:56,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 13:30:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1241, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:30:56,461 INFO L87 Difference]: Start difference. First operand 5390 states and 11032 transitions. Second operand has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:01,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:01,050 INFO L93 Difference]: Finished difference Result 8959 states and 18431 transitions. [2022-03-15 13:31:01,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-15 13:31:01,051 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:01,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:01,062 INFO L225 Difference]: With dead ends: 8959 [2022-03-15 13:31:01,063 INFO L226 Difference]: Without dead ends: 8959 [2022-03-15 13:31:01,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1402, Invalid=7154, Unknown=0, NotChecked=0, Total=8556 [2022-03-15 13:31:01,064 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 1796 mSDsluCounter, 10582 mSDsCounter, 0 mSdLazyCounter, 4499 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 11150 SdHoareTripleChecker+Invalid, 4545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 4499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:01,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 11150 Invalid, 4545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 4499 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:31:01,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8959 states. [2022-03-15 13:31:01,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8959 to 5689. [2022-03-15 13:31:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5689 states, 5686 states have (on average 2.0517059444249033) internal successors, (11666), 5688 states have internal predecessors, (11666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5689 states to 5689 states and 11666 transitions. [2022-03-15 13:31:01,166 INFO L78 Accepts]: Start accepts. Automaton has 5689 states and 11666 transitions. Word has length 99 [2022-03-15 13:31:01,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:01,166 INFO L470 AbstractCegarLoop]: Abstraction has 5689 states and 11666 transitions. [2022-03-15 13:31:01,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:01,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5689 states and 11666 transitions. [2022-03-15 13:31:01,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:01,170 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:01,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:01,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-03-15 13:31:01,171 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:01,171 INFO L85 PathProgramCache]: Analyzing trace with hash -515437201, now seen corresponding path program 112 times [2022-03-15 13:31:01,171 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:01,171 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341676559] [2022-03-15 13:31:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:01,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:01,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:01,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341676559] [2022-03-15 13:31:01,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341676559] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:01,838 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:01,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:31:01,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992385007] [2022-03-15 13:31:01,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:01,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:31:01,839 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:01,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:31:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:31:01,839 INFO L87 Difference]: Start difference. First operand 5689 states and 11666 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:06,609 INFO L93 Difference]: Finished difference Result 9398 states and 19315 transitions. [2022-03-15 13:31:06,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:31:06,610 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:06,622 INFO L225 Difference]: With dead ends: 9398 [2022-03-15 13:31:06,622 INFO L226 Difference]: Without dead ends: 9398 [2022-03-15 13:31:06,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:31:06,623 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 1591 mSDsluCounter, 9190 mSDsCounter, 0 mSdLazyCounter, 3666 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 9754 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:06,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 9754 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3666 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:31:06,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9398 states. [2022-03-15 13:31:06,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9398 to 5384. [2022-03-15 13:31:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5384 states, 5381 states have (on average 2.047946478349749) internal successors, (11020), 5383 states have internal predecessors, (11020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5384 states to 5384 states and 11020 transitions. [2022-03-15 13:31:06,698 INFO L78 Accepts]: Start accepts. Automaton has 5384 states and 11020 transitions. Word has length 99 [2022-03-15 13:31:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:06,698 INFO L470 AbstractCegarLoop]: Abstraction has 5384 states and 11020 transitions. [2022-03-15 13:31:06,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5384 states and 11020 transitions. [2022-03-15 13:31:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:06,702 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:06,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:06,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-03-15 13:31:06,703 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:06,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:06,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1800973723, now seen corresponding path program 113 times [2022-03-15 13:31:06,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:06,703 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890244] [2022-03-15 13:31:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:06,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:07,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:07,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890244] [2022-03-15 13:31:07,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890244] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:07,534 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:07,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:31:07,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719791974] [2022-03-15 13:31:07,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:07,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:31:07,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:07,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:31:07,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:31:07,535 INFO L87 Difference]: Start difference. First operand 5384 states and 11020 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:11,818 INFO L93 Difference]: Finished difference Result 7751 states and 15924 transitions. [2022-03-15 13:31:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:31:11,818 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:11,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:11,828 INFO L225 Difference]: With dead ends: 7751 [2022-03-15 13:31:11,828 INFO L226 Difference]: Without dead ends: 7751 [2022-03-15 13:31:11,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:31:11,829 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1567 mSDsluCounter, 9804 mSDsCounter, 0 mSdLazyCounter, 3899 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 10367 SdHoareTripleChecker+Invalid, 3932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:11,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 10367 Invalid, 3932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3899 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:31:11,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7751 states. [2022-03-15 13:31:11,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7751 to 5412. [2022-03-15 13:31:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5409 states have (on average 2.0480680347568865) internal successors, (11078), 5411 states have internal predecessors, (11078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:11,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 11078 transitions. [2022-03-15 13:31:11,899 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 11078 transitions. Word has length 99 [2022-03-15 13:31:11,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:11,899 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 11078 transitions. [2022-03-15 13:31:11,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:11,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 11078 transitions. [2022-03-15 13:31:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:11,903 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:11,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:11,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-03-15 13:31:11,904 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:11,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1708330211, now seen corresponding path program 114 times [2022-03-15 13:31:11,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:11,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227490045] [2022-03-15 13:31:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:12,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:12,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227490045] [2022-03-15 13:31:12,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227490045] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:12,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:12,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:31:12,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803049073] [2022-03-15 13:31:12,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:12,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:31:12,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:12,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:31:12,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:31:12,356 INFO L87 Difference]: Start difference. First operand 5412 states and 11078 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:15,970 INFO L93 Difference]: Finished difference Result 9721 states and 19975 transitions. [2022-03-15 13:31:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:31:15,970 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:15,982 INFO L225 Difference]: With dead ends: 9721 [2022-03-15 13:31:15,982 INFO L226 Difference]: Without dead ends: 9721 [2022-03-15 13:31:15,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:31:15,982 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 1767 mSDsluCounter, 9716 mSDsCounter, 0 mSdLazyCounter, 3713 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 10325 SdHoareTripleChecker+Invalid, 3749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:15,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1767 Valid, 10325 Invalid, 3749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3713 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:31:15,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9721 states. [2022-03-15 13:31:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9721 to 5414. [2022-03-15 13:31:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5411 states have (on average 2.0480502679726484) internal successors, (11082), 5413 states have internal predecessors, (11082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 11082 transitions. [2022-03-15 13:31:16,056 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 11082 transitions. Word has length 99 [2022-03-15 13:31:16,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:16,056 INFO L470 AbstractCegarLoop]: Abstraction has 5414 states and 11082 transitions. [2022-03-15 13:31:16,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 11082 transitions. [2022-03-15 13:31:16,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:16,060 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:16,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:16,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-03-15 13:31:16,060 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:16,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:16,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1379467661, now seen corresponding path program 115 times [2022-03-15 13:31:16,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:16,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789493260] [2022-03-15 13:31:16,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:16,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:16,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:16,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789493260] [2022-03-15 13:31:16,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789493260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:16,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:16,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:31:16,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88056552] [2022-03-15 13:31:16,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:16,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:31:16,549 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:16,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:31:16,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:31:16,550 INFO L87 Difference]: Start difference. First operand 5414 states and 11082 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:19,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:19,726 INFO L93 Difference]: Finished difference Result 7814 states and 16033 transitions. [2022-03-15 13:31:19,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:31:19,727 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:19,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:19,737 INFO L225 Difference]: With dead ends: 7814 [2022-03-15 13:31:19,737 INFO L226 Difference]: Without dead ends: 7814 [2022-03-15 13:31:19,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:31:19,738 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1740 mSDsluCounter, 8913 mSDsCounter, 0 mSdLazyCounter, 3563 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 9490 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:19,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1740 Valid, 9490 Invalid, 3602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3563 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:31:19,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7814 states. [2022-03-15 13:31:19,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7814 to 5396. [2022-03-15 13:31:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5396 states, 5393 states have (on average 2.047839792323382) internal successors, (11044), 5395 states have internal predecessors, (11044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 11044 transitions. [2022-03-15 13:31:19,813 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 11044 transitions. Word has length 99 [2022-03-15 13:31:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:19,814 INFO L470 AbstractCegarLoop]: Abstraction has 5396 states and 11044 transitions. [2022-03-15 13:31:19,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 11044 transitions. [2022-03-15 13:31:19,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:19,818 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:19,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:19,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-03-15 13:31:19,818 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:19,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:19,818 INFO L85 PathProgramCache]: Analyzing trace with hash 230383289, now seen corresponding path program 116 times [2022-03-15 13:31:19,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:19,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273032935] [2022-03-15 13:31:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:19,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:20,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:20,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273032935] [2022-03-15 13:31:20,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273032935] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:20,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:20,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:31:20,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862963256] [2022-03-15 13:31:20,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:20,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:31:20,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:20,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:31:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:31:20,483 INFO L87 Difference]: Start difference. First operand 5396 states and 11044 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:25,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:25,360 INFO L93 Difference]: Finished difference Result 7836 states and 16094 transitions. [2022-03-15 13:31:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:31:25,360 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:25,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:25,369 INFO L225 Difference]: With dead ends: 7836 [2022-03-15 13:31:25,369 INFO L226 Difference]: Without dead ends: 7836 [2022-03-15 13:31:25,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:31:25,370 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1522 mSDsluCounter, 10189 mSDsCounter, 0 mSdLazyCounter, 4196 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 10756 SdHoareTripleChecker+Invalid, 4230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:25,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 10756 Invalid, 4230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4196 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 13:31:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7836 states. [2022-03-15 13:31:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7836 to 5394. [2022-03-15 13:31:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5391 states have (on average 2.0478575403450194) internal successors, (11040), 5393 states have internal predecessors, (11040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 11040 transitions. [2022-03-15 13:31:25,428 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 11040 transitions. Word has length 99 [2022-03-15 13:31:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:25,428 INFO L470 AbstractCegarLoop]: Abstraction has 5394 states and 11040 transitions. [2022-03-15 13:31:25,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 11040 transitions. [2022-03-15 13:31:25,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:25,432 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:25,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:25,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-03-15 13:31:25,432 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:25,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1952066597, now seen corresponding path program 117 times [2022-03-15 13:31:25,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:25,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265113109] [2022-03-15 13:31:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:25,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:26,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:26,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265113109] [2022-03-15 13:31:26,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265113109] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:26,222 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:26,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:31:26,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92680331] [2022-03-15 13:31:26,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:26,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:31:26,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:26,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:31:26,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:31:26,222 INFO L87 Difference]: Start difference. First operand 5394 states and 11040 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:31,026 INFO L93 Difference]: Finished difference Result 7887 states and 16196 transitions. [2022-03-15 13:31:31,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:31:31,027 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:31,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:31,035 INFO L225 Difference]: With dead ends: 7887 [2022-03-15 13:31:31,035 INFO L226 Difference]: Without dead ends: 7887 [2022-03-15 13:31:31,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:31:31,036 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1595 mSDsluCounter, 9152 mSDsCounter, 0 mSdLazyCounter, 3774 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 9718 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:31,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1595 Valid, 9718 Invalid, 3809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3774 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 13:31:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7887 states. [2022-03-15 13:31:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7887 to 5390. [2022-03-15 13:31:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5387 states have (on average 2.0478930759235197) internal successors, (11032), 5389 states have internal predecessors, (11032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 11032 transitions. [2022-03-15 13:31:31,093 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 11032 transitions. Word has length 99 [2022-03-15 13:31:31,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:31,093 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 11032 transitions. [2022-03-15 13:31:31,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:31,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 11032 transitions. [2022-03-15 13:31:31,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:31,097 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:31,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:31,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-03-15 13:31:31,098 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:31,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:31,098 INFO L85 PathProgramCache]: Analyzing trace with hash -228584293, now seen corresponding path program 118 times [2022-03-15 13:31:31,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:31,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899140636] [2022-03-15 13:31:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:31,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:31,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:31,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899140636] [2022-03-15 13:31:31,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899140636] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:31,922 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:31,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:31:31,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83634197] [2022-03-15 13:31:31,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:31,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:31:31,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:31,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:31:31,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:31:31,923 INFO L87 Difference]: Start difference. First operand 5390 states and 11032 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:36,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:36,991 INFO L93 Difference]: Finished difference Result 7489 states and 15364 transitions. [2022-03-15 13:31:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:31:36,991 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:36,999 INFO L225 Difference]: With dead ends: 7489 [2022-03-15 13:31:36,999 INFO L226 Difference]: Without dead ends: 7489 [2022-03-15 13:31:37,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=958, Invalid=4742, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:31:37,001 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1546 mSDsluCounter, 10213 mSDsCounter, 0 mSdLazyCounter, 4281 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 10774 SdHoareTripleChecker+Invalid, 4320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:37,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 10774 Invalid, 4320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 4281 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 13:31:37,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2022-03-15 13:31:37,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 5384. [2022-03-15 13:31:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5384 states, 5381 states have (on average 2.047946478349749) internal successors, (11020), 5383 states have internal predecessors, (11020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5384 states to 5384 states and 11020 transitions. [2022-03-15 13:31:37,069 INFO L78 Accepts]: Start accepts. Automaton has 5384 states and 11020 transitions. Word has length 99 [2022-03-15 13:31:37,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:37,069 INFO L470 AbstractCegarLoop]: Abstraction has 5384 states and 11020 transitions. [2022-03-15 13:31:37,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:37,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5384 states and 11020 transitions. [2022-03-15 13:31:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:37,074 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:37,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:37,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-03-15 13:31:37,074 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:37,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:37,074 INFO L85 PathProgramCache]: Analyzing trace with hash -983511297, now seen corresponding path program 119 times [2022-03-15 13:31:37,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:37,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092662332] [2022-03-15 13:31:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:37,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:37,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:37,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092662332] [2022-03-15 13:31:37,919 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092662332] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:37,919 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:37,919 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:31:37,920 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133189813] [2022-03-15 13:31:37,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:37,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:31:37,920 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:37,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:31:37,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:31:37,920 INFO L87 Difference]: Start difference. First operand 5384 states and 11020 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:42,652 INFO L93 Difference]: Finished difference Result 7861 states and 16147 transitions. [2022-03-15 13:31:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:31:42,652 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:42,706 INFO L225 Difference]: With dead ends: 7861 [2022-03-15 13:31:42,706 INFO L226 Difference]: Without dead ends: 7861 [2022-03-15 13:31:42,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:31:42,707 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1774 mSDsluCounter, 9323 mSDsCounter, 0 mSdLazyCounter, 3583 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 9888 SdHoareTripleChecker+Invalid, 3620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:42,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1774 Valid, 9888 Invalid, 3620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3583 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:31:42,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7861 states. [2022-03-15 13:31:42,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7861 to 5415. [2022-03-15 13:31:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5415 states, 5412 states have (on average 2.0482261640798227) internal successors, (11085), 5414 states have internal predecessors, (11085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 11085 transitions. [2022-03-15 13:31:42,772 INFO L78 Accepts]: Start accepts. Automaton has 5415 states and 11085 transitions. Word has length 99 [2022-03-15 13:31:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:42,773 INFO L470 AbstractCegarLoop]: Abstraction has 5415 states and 11085 transitions. [2022-03-15 13:31:42,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:42,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5415 states and 11085 transitions. [2022-03-15 13:31:42,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:42,777 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:42,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:42,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-03-15 13:31:42,778 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:42,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:42,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1076154809, now seen corresponding path program 120 times [2022-03-15 13:31:42,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:42,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901256155] [2022-03-15 13:31:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:42,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:43,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:43,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901256155] [2022-03-15 13:31:43,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901256155] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:43,545 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:43,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:31:43,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572893988] [2022-03-15 13:31:43,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:43,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:31:43,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:43,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:31:43,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:31:43,547 INFO L87 Difference]: Start difference. First operand 5415 states and 11085 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:47,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:47,155 INFO L93 Difference]: Finished difference Result 9943 states and 20441 transitions. [2022-03-15 13:31:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:31:47,156 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:47,168 INFO L225 Difference]: With dead ends: 9943 [2022-03-15 13:31:47,168 INFO L226 Difference]: Without dead ends: 9943 [2022-03-15 13:31:47,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1065, Invalid=5097, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 13:31:47,169 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 1646 mSDsluCounter, 11121 mSDsCounter, 0 mSdLazyCounter, 4153 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 11732 SdHoareTripleChecker+Invalid, 4191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 4153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:47,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1646 Valid, 11732 Invalid, 4191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 4153 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:31:47,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9943 states. [2022-03-15 13:31:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9943 to 5417. [2022-03-15 13:31:47,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5417 states, 5414 states have (on average 2.0482083487255265) internal successors, (11089), 5416 states have internal predecessors, (11089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5417 states to 5417 states and 11089 transitions. [2022-03-15 13:31:47,245 INFO L78 Accepts]: Start accepts. Automaton has 5417 states and 11089 transitions. Word has length 99 [2022-03-15 13:31:47,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:47,245 INFO L470 AbstractCegarLoop]: Abstraction has 5417 states and 11089 transitions. [2022-03-15 13:31:47,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:47,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5417 states and 11089 transitions. [2022-03-15 13:31:47,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:47,249 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:47,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:47,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-03-15 13:31:47,250 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:47,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash 131014615, now seen corresponding path program 121 times [2022-03-15 13:31:47,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:47,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509352878] [2022-03-15 13:31:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:47,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:47,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:47,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509352878] [2022-03-15 13:31:47,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509352878] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:47,762 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:47,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:31:47,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695578778] [2022-03-15 13:31:47,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:47,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:31:47,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:31:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:31:47,763 INFO L87 Difference]: Start difference. First operand 5417 states and 11089 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:51,097 INFO L93 Difference]: Finished difference Result 7965 states and 16357 transitions. [2022-03-15 13:31:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:31:51,097 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:51,109 INFO L225 Difference]: With dead ends: 7965 [2022-03-15 13:31:51,109 INFO L226 Difference]: Without dead ends: 7965 [2022-03-15 13:31:51,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:31:51,110 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1562 mSDsluCounter, 10518 mSDsCounter, 0 mSdLazyCounter, 4085 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 11097 SdHoareTripleChecker+Invalid, 4119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:51,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 11097 Invalid, 4119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4085 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 13:31:51,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2022-03-15 13:31:51,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 5399. [2022-03-15 13:31:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5399 states, 5396 states have (on average 2.0479985174203112) internal successors, (11051), 5398 states have internal predecessors, (11051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5399 states to 5399 states and 11051 transitions. [2022-03-15 13:31:51,192 INFO L78 Accepts]: Start accepts. Automaton has 5399 states and 11051 transitions. Word has length 99 [2022-03-15 13:31:51,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:51,192 INFO L470 AbstractCegarLoop]: Abstraction has 5399 states and 11051 transitions. [2022-03-15 13:31:51,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5399 states and 11051 transitions. [2022-03-15 13:31:51,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:51,197 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:51,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:51,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-03-15 13:31:51,198 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1864208313, now seen corresponding path program 122 times [2022-03-15 13:31:51,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:51,198 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014172252] [2022-03-15 13:31:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:51,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:51,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:51,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014172252] [2022-03-15 13:31:51,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014172252] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:51,698 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:51,698 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:31:51,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130775775] [2022-03-15 13:31:51,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:51,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:31:51,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:31:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:31:51,699 INFO L87 Difference]: Start difference. First operand 5399 states and 11051 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:55,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:55,358 INFO L93 Difference]: Finished difference Result 9976 states and 20493 transitions. [2022-03-15 13:31:55,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:31:55,358 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:55,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:55,372 INFO L225 Difference]: With dead ends: 9976 [2022-03-15 13:31:55,372 INFO L226 Difference]: Without dead ends: 9976 [2022-03-15 13:31:55,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1165, Invalid=5315, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 13:31:55,373 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 1716 mSDsluCounter, 10725 mSDsCounter, 0 mSdLazyCounter, 3797 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 11360 SdHoareTripleChecker+Invalid, 3829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:55,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1716 Valid, 11360 Invalid, 3829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3797 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:31:55,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9976 states. [2022-03-15 13:31:55,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9976 to 5400. [2022-03-15 13:31:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5397 states have (on average 2.04798962386511) internal successors, (11053), 5399 states have internal predecessors, (11053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:55,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 11053 transitions. [2022-03-15 13:31:55,458 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 11053 transitions. Word has length 99 [2022-03-15 13:31:55,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:55,458 INFO L470 AbstractCegarLoop]: Abstraction has 5400 states and 11053 transitions. [2022-03-15 13:31:55,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:55,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 11053 transitions. [2022-03-15 13:31:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:55,463 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:55,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:55,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-03-15 13:31:55,463 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:55,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1885401385, now seen corresponding path program 123 times [2022-03-15 13:31:55,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:55,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6249672] [2022-03-15 13:31:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:55,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:55,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:55,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6249672] [2022-03-15 13:31:55,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6249672] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:55,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:55,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-03-15 13:31:55,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447076278] [2022-03-15 13:31:55,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:55,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 13:31:55,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 13:31:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2022-03-15 13:31:55,885 INFO L87 Difference]: Start difference. First operand 5400 states and 11053 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:59,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:31:59,053 INFO L93 Difference]: Finished difference Result 8982 states and 18436 transitions. [2022-03-15 13:31:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 13:31:59,053 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:31:59,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:31:59,065 INFO L225 Difference]: With dead ends: 8982 [2022-03-15 13:31:59,065 INFO L226 Difference]: Without dead ends: 8982 [2022-03-15 13:31:59,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1008, Invalid=4692, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:31:59,066 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1830 mSDsluCounter, 9376 mSDsCounter, 0 mSdLazyCounter, 3445 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 9964 SdHoareTripleChecker+Invalid, 3480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:31:59,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1830 Valid, 9964 Invalid, 3480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3445 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 13:31:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8982 states. [2022-03-15 13:31:59,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8982 to 5402. [2022-03-15 13:31:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5399 states have (on average 2.047971846638266) internal successors, (11057), 5401 states have internal predecessors, (11057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 11057 transitions. [2022-03-15 13:31:59,141 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 11057 transitions. Word has length 99 [2022-03-15 13:31:59,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:31:59,142 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 11057 transitions. [2022-03-15 13:31:59,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 31 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:31:59,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 11057 transitions. [2022-03-15 13:31:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:31:59,146 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:31:59,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:31:59,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-03-15 13:31:59,146 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:31:59,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:31:59,146 INFO L85 PathProgramCache]: Analyzing trace with hash 575588439, now seen corresponding path program 124 times [2022-03-15 13:31:59,146 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:31:59,146 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546172310] [2022-03-15 13:31:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:31:59,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:31:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:31:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:31:59,625 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:31:59,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546172310] [2022-03-15 13:31:59,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546172310] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:31:59,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:31:59,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:31:59,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785834935] [2022-03-15 13:31:59,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:31:59,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:31:59,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:31:59,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:31:59,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:31:59,626 INFO L87 Difference]: Start difference. First operand 5402 states and 11057 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:02,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:32:02,844 INFO L93 Difference]: Finished difference Result 7937 states and 16282 transitions. [2022-03-15 13:32:02,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:32:02,844 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:32:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:32:02,856 INFO L225 Difference]: With dead ends: 7937 [2022-03-15 13:32:02,856 INFO L226 Difference]: Without dead ends: 7937 [2022-03-15 13:32:02,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=935, Invalid=4615, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:32:02,857 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1486 mSDsluCounter, 10257 mSDsCounter, 0 mSdLazyCounter, 3914 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 10836 SdHoareTripleChecker+Invalid, 3949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:32:02,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1486 Valid, 10836 Invalid, 3949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3914 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:32:02,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2022-03-15 13:32:02,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 5391. [2022-03-15 13:32:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5391 states, 5388 states have (on average 2.0478841870824054) internal successors, (11034), 5390 states have internal predecessors, (11034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5391 states to 5391 states and 11034 transitions. [2022-03-15 13:32:02,968 INFO L78 Accepts]: Start accepts. Automaton has 5391 states and 11034 transitions. Word has length 99 [2022-03-15 13:32:02,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:32:02,968 INFO L470 AbstractCegarLoop]: Abstraction has 5391 states and 11034 transitions. [2022-03-15 13:32:02,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:02,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5391 states and 11034 transitions. [2022-03-15 13:32:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:32:02,973 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:32:02,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:32:02,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-03-15 13:32:02,973 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:32:02,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:32:02,973 INFO L85 PathProgramCache]: Analyzing trace with hash 543473033, now seen corresponding path program 125 times [2022-03-15 13:32:02,973 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:32:02,973 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994427995] [2022-03-15 13:32:02,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:32:02,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:32:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:32:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:32:03,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:32:03,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994427995] [2022-03-15 13:32:03,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994427995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:32:03,605 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:32:03,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:32:03,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971848867] [2022-03-15 13:32:03,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:32:03,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:32:03,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:32:03,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:32:03,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:32:03,606 INFO L87 Difference]: Start difference. First operand 5391 states and 11034 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:32:07,136 INFO L93 Difference]: Finished difference Result 8204 states and 16869 transitions. [2022-03-15 13:32:07,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:32:07,137 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:32:07,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:32:07,148 INFO L225 Difference]: With dead ends: 8204 [2022-03-15 13:32:07,148 INFO L226 Difference]: Without dead ends: 8204 [2022-03-15 13:32:07,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=944, Invalid=4606, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:32:07,149 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1568 mSDsluCounter, 9282 mSDsCounter, 0 mSdLazyCounter, 3517 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 9852 SdHoareTripleChecker+Invalid, 3550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:32:07,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1568 Valid, 9852 Invalid, 3550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3517 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:32:07,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8204 states. [2022-03-15 13:32:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8204 to 5409. [2022-03-15 13:32:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5409 states, 5406 states have (on average 2.048094709581946) internal successors, (11072), 5408 states have internal predecessors, (11072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5409 states to 5409 states and 11072 transitions. [2022-03-15 13:32:07,217 INFO L78 Accepts]: Start accepts. Automaton has 5409 states and 11072 transitions. Word has length 99 [2022-03-15 13:32:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:32:07,217 INFO L470 AbstractCegarLoop]: Abstraction has 5409 states and 11072 transitions. [2022-03-15 13:32:07,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 5409 states and 11072 transitions. [2022-03-15 13:32:07,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:32:07,221 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:32:07,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:32:07,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-03-15 13:32:07,222 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:32:07,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:32:07,222 INFO L85 PathProgramCache]: Analyzing trace with hash 450829521, now seen corresponding path program 126 times [2022-03-15 13:32:07,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:32:07,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345957460] [2022-03-15 13:32:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:32:07,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:32:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:32:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:32:07,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:32:07,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345957460] [2022-03-15 13:32:07,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345957460] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:32:07,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:32:07,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:32:07,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25186936] [2022-03-15 13:32:07,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:32:07,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:32:07,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:32:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:32:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:32:07,715 INFO L87 Difference]: Start difference. First operand 5409 states and 11072 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:32:12,105 INFO L93 Difference]: Finished difference Result 10174 states and 20920 transitions. [2022-03-15 13:32:12,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:32:12,131 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:32:12,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:32:12,145 INFO L225 Difference]: With dead ends: 10174 [2022-03-15 13:32:12,146 INFO L226 Difference]: Without dead ends: 10174 [2022-03-15 13:32:12,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:32:12,146 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1594 mSDsluCounter, 11119 mSDsCounter, 0 mSdLazyCounter, 4210 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 11735 SdHoareTripleChecker+Invalid, 4244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:32:12,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1594 Valid, 11735 Invalid, 4244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4210 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:32:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10174 states. [2022-03-15 13:32:12,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10174 to 5411. [2022-03-15 13:32:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5411 states, 5408 states have (on average 2.048076923076923) internal successors, (11076), 5410 states have internal predecessors, (11076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 11076 transitions. [2022-03-15 13:32:12,248 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 11076 transitions. Word has length 99 [2022-03-15 13:32:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:32:12,248 INFO L470 AbstractCegarLoop]: Abstraction has 5411 states and 11076 transitions. [2022-03-15 13:32:12,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 11076 transitions. [2022-03-15 13:32:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:32:12,253 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:32:12,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:32:12,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-03-15 13:32:12,253 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:32:12,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:32:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1657998945, now seen corresponding path program 127 times [2022-03-15 13:32:12,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:32:12,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832011915] [2022-03-15 13:32:12,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:32:12,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:32:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:32:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:32:12,770 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:32:12,770 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832011915] [2022-03-15 13:32:12,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832011915] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:32:12,770 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:32:12,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:32:12,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351675224] [2022-03-15 13:32:12,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:32:12,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:32:12,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:32:12,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:32:12,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:32:12,771 INFO L87 Difference]: Start difference. First operand 5411 states and 11076 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:32:16,080 INFO L93 Difference]: Finished difference Result 8267 states and 16978 transitions. [2022-03-15 13:32:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:32:16,080 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:32:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:32:16,089 INFO L225 Difference]: With dead ends: 8267 [2022-03-15 13:32:16,090 INFO L226 Difference]: Without dead ends: 8267 [2022-03-15 13:32:16,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:32:16,090 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1529 mSDsluCounter, 9543 mSDsCounter, 0 mSdLazyCounter, 3740 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 10127 SdHoareTripleChecker+Invalid, 3774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:32:16,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 10127 Invalid, 3774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3740 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 13:32:16,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8267 states. [2022-03-15 13:32:16,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8267 to 5393. [2022-03-15 13:32:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5393 states, 5390 states have (on average 2.0478664192949907) internal successors, (11038), 5392 states have internal predecessors, (11038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:16,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5393 states to 5393 states and 11038 transitions. [2022-03-15 13:32:16,156 INFO L78 Accepts]: Start accepts. Automaton has 5393 states and 11038 transitions. Word has length 99 [2022-03-15 13:32:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:32:16,156 INFO L470 AbstractCegarLoop]: Abstraction has 5393 states and 11038 transitions. [2022-03-15 13:32:16,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5393 states and 11038 transitions. [2022-03-15 13:32:16,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:32:16,160 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:32:16,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:32:16,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-03-15 13:32:16,160 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:32:16,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:32:16,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1027117401, now seen corresponding path program 128 times [2022-03-15 13:32:16,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:32:16,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882042297] [2022-03-15 13:32:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:32:16,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:32:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:32:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:32:16,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:32:16,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882042297] [2022-03-15 13:32:16,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882042297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:32:16,684 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:32:16,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:32:16,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101573936] [2022-03-15 13:32:16,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:32:16,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:32:16,685 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:32:16,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:32:16,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:32:16,685 INFO L87 Difference]: Start difference. First operand 5393 states and 11038 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:32:20,115 INFO L93 Difference]: Finished difference Result 7948 states and 16321 transitions. [2022-03-15 13:32:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:32:20,115 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:32:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:32:20,126 INFO L225 Difference]: With dead ends: 7948 [2022-03-15 13:32:20,126 INFO L226 Difference]: Without dead ends: 7948 [2022-03-15 13:32:20,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:32:20,127 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 1517 mSDsluCounter, 9741 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 10309 SdHoareTripleChecker+Invalid, 3987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:32:20,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 10309 Invalid, 3987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3954 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:32:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7948 states. [2022-03-15 13:32:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7948 to 5390. [2022-03-15 13:32:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5387 states have (on average 2.0478930759235197) internal successors, (11032), 5389 states have internal predecessors, (11032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 11032 transitions. [2022-03-15 13:32:20,232 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 11032 transitions. Word has length 99 [2022-03-15 13:32:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:32:20,232 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 11032 transitions. [2022-03-15 13:32:20,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 11032 transitions. [2022-03-15 13:32:20,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:32:20,237 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:32:20,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:32:20,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-03-15 13:32:20,237 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:32:20,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:32:20,238 INFO L85 PathProgramCache]: Analyzing trace with hash -210721965, now seen corresponding path program 129 times [2022-03-15 13:32:20,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:32:20,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318104417] [2022-03-15 13:32:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:32:20,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:32:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:32:21,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:32:21,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:32:21,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318104417] [2022-03-15 13:32:21,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318104417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:32:21,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:32:21,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-15 13:32:21,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090765320] [2022-03-15 13:32:21,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:32:21,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 13:32:21,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:32:21,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 13:32:21,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 13:32:21,060 INFO L87 Difference]: Start difference. First operand 5390 states and 11032 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:32:25,933 INFO L93 Difference]: Finished difference Result 8261 states and 16983 transitions. [2022-03-15 13:32:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:32:25,934 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:32:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:32:25,946 INFO L225 Difference]: With dead ends: 8261 [2022-03-15 13:32:25,946 INFO L226 Difference]: Without dead ends: 8261 [2022-03-15 13:32:25,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=959, Invalid=4741, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 13:32:25,947 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1522 mSDsluCounter, 9748 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 10318 SdHoareTripleChecker+Invalid, 3770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:32:25,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 10318 Invalid, 3770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3732 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 13:32:25,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8261 states. [2022-03-15 13:32:26,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8261 to 5412. [2022-03-15 13:32:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5409 states have (on average 2.0480680347568865) internal successors, (11078), 5411 states have internal predecessors, (11078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 11078 transitions. [2022-03-15 13:32:26,023 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 11078 transitions. Word has length 99 [2022-03-15 13:32:26,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:32:26,023 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 11078 transitions. [2022-03-15 13:32:26,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 33 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:26,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 11078 transitions. [2022-03-15 13:32:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:32:26,028 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:32:26,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:32:26,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-03-15 13:32:26,028 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:32:26,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:32:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash -303365477, now seen corresponding path program 130 times [2022-03-15 13:32:26,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:32:26,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254885689] [2022-03-15 13:32:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:32:26,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:32:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:32:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:32:26,759 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:32:26,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254885689] [2022-03-15 13:32:26,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254885689] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:32:26,759 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:32:26,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:32:26,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940661684] [2022-03-15 13:32:26,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:32:26,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:32:26,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:32:26,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:32:26,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:32:26,760 INFO L87 Difference]: Start difference. First operand 5412 states and 11078 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:31,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:32:31,286 INFO L93 Difference]: Finished difference Result 10231 states and 21034 transitions. [2022-03-15 13:32:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:32:31,287 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:32:31,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:32:31,299 INFO L225 Difference]: With dead ends: 10231 [2022-03-15 13:32:31,299 INFO L226 Difference]: Without dead ends: 10231 [2022-03-15 13:32:31,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:32:31,300 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1552 mSDsluCounter, 10743 mSDsCounter, 0 mSdLazyCounter, 4057 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 11359 SdHoareTripleChecker+Invalid, 4090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:32:31,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 11359 Invalid, 4090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4057 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:32:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10231 states. [2022-03-15 13:32:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10231 to 5414. [2022-03-15 13:32:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5411 states have (on average 2.0480502679726484) internal successors, (11082), 5413 states have internal predecessors, (11082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 11082 transitions. [2022-03-15 13:32:31,379 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 11082 transitions. Word has length 99 [2022-03-15 13:32:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:32:31,379 INFO L470 AbstractCegarLoop]: Abstraction has 5414 states and 11082 transitions. [2022-03-15 13:32:31,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 11082 transitions. [2022-03-15 13:32:31,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:32:31,383 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:32:31,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:32:31,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-03-15 13:32:31,384 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:32:31,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:32:31,384 INFO L85 PathProgramCache]: Analyzing trace with hash 903803947, now seen corresponding path program 131 times [2022-03-15 13:32:31,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:32:31,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915065030] [2022-03-15 13:32:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:32:31,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:32:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:32:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:32:31,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:32:31,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915065030] [2022-03-15 13:32:31,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915065030] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:32:31,918 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:32:31,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:32:31,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051847476] [2022-03-15 13:32:31,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:32:31,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:32:31,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:32:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:32:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:32:31,919 INFO L87 Difference]: Start difference. First operand 5414 states and 11082 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:35,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:32:35,788 INFO L93 Difference]: Finished difference Result 8324 states and 17092 transitions. [2022-03-15 13:32:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:32:35,789 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:32:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:32:35,800 INFO L225 Difference]: With dead ends: 8324 [2022-03-15 13:32:35,800 INFO L226 Difference]: Without dead ends: 8324 [2022-03-15 13:32:35,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=939, Invalid=4611, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:32:35,801 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1608 mSDsluCounter, 9108 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 9692 SdHoareTripleChecker+Invalid, 3541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:32:35,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 9692 Invalid, 3541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 13:32:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8324 states. [2022-03-15 13:32:35,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8324 to 5396. [2022-03-15 13:32:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5396 states, 5393 states have (on average 2.047839792323382) internal successors, (11044), 5395 states have internal predecessors, (11044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 11044 transitions. [2022-03-15 13:32:35,882 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 11044 transitions. Word has length 99 [2022-03-15 13:32:35,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:32:35,882 INFO L470 AbstractCegarLoop]: Abstraction has 5396 states and 11044 transitions. [2022-03-15 13:32:35,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:35,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 11044 transitions. [2022-03-15 13:32:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:32:35,889 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:32:35,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:32:35,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-03-15 13:32:35,889 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:32:35,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:32:35,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1781312399, now seen corresponding path program 132 times [2022-03-15 13:32:35,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:32:35,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547287054] [2022-03-15 13:32:35,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:32:35,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:32:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:32:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:32:36,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:32:36,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547287054] [2022-03-15 13:32:36,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547287054] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:32:36,742 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:32:36,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:32:36,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342959057] [2022-03-15 13:32:36,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:32:36,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:32:36,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:32:36,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:32:36,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:32:36,743 INFO L87 Difference]: Start difference. First operand 5396 states and 11044 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:32:40,670 INFO L93 Difference]: Finished difference Result 8346 states and 17153 transitions. [2022-03-15 13:32:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:32:40,670 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:32:40,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:32:40,681 INFO L225 Difference]: With dead ends: 8346 [2022-03-15 13:32:40,681 INFO L226 Difference]: Without dead ends: 8346 [2022-03-15 13:32:40,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:32:40,682 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1593 mSDsluCounter, 10059 mSDsCounter, 0 mSdLazyCounter, 4068 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 10633 SdHoareTripleChecker+Invalid, 4102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:32:40,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1593 Valid, 10633 Invalid, 4102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4068 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:32:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8346 states. [2022-03-15 13:32:40,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8346 to 5394. [2022-03-15 13:32:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5391 states have (on average 2.0478575403450194) internal successors, (11040), 5393 states have internal predecessors, (11040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:40,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 11040 transitions. [2022-03-15 13:32:40,786 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 11040 transitions. Word has length 99 [2022-03-15 13:32:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:32:40,786 INFO L470 AbstractCegarLoop]: Abstraction has 5394 states and 11040 transitions. [2022-03-15 13:32:40,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 11040 transitions. [2022-03-15 13:32:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:32:40,791 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:32:40,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:32:40,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-03-15 13:32:40,792 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:32:40,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:32:40,792 INFO L85 PathProgramCache]: Analyzing trace with hash 331205011, now seen corresponding path program 133 times [2022-03-15 13:32:40,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:32:40,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245387143] [2022-03-15 13:32:40,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:32:40,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:32:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:32:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:32:41,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:32:41,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245387143] [2022-03-15 13:32:41,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245387143] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:32:41,605 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:32:41,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:32:41,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955037020] [2022-03-15 13:32:41,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:32:41,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:32:41,605 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:32:41,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:32:41,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=920, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:32:41,606 INFO L87 Difference]: Start difference. First operand 5394 states and 11040 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:46,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:32:46,039 INFO L93 Difference]: Finished difference Result 8003 states and 16431 transitions. [2022-03-15 13:32:46,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:32:46,039 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-03-15 13:32:46,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:32:46,050 INFO L225 Difference]: With dead ends: 8003 [2022-03-15 13:32:46,050 INFO L226 Difference]: Without dead ends: 8003 [2022-03-15 13:32:46,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=943, Invalid=4607, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 13:32:46,051 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 1622 mSDsluCounter, 9339 mSDsCounter, 0 mSdLazyCounter, 3709 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 9906 SdHoareTripleChecker+Invalid, 3743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:32:46,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1622 Valid, 9906 Invalid, 3743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3709 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 13:32:46,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8003 states. [2022-03-15 13:32:46,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8003 to 5388. [2022-03-15 13:32:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 5385 states have (on average 2.0479108635097494) internal successors, (11028), 5387 states have internal predecessors, (11028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 11028 transitions. [2022-03-15 13:32:46,121 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 11028 transitions. Word has length 99 [2022-03-15 13:32:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:32:46,121 INFO L470 AbstractCegarLoop]: Abstraction has 5388 states and 11028 transitions. [2022-03-15 13:32:46,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:32:46,121 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 11028 transitions. [2022-03-15 13:32:46,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-15 13:32:46,126 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:32:46,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:32:46,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-03-15 13:32:46,126 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION === [reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-03-15 13:32:46,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:32:46,126 INFO L85 PathProgramCache]: Analyzing trace with hash -545285381, now seen corresponding path program 134 times [2022-03-15 13:32:46,126 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:32:46,126 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029588150] [2022-03-15 13:32:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:32:46,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:32:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:32:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:32:46,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:32:46,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029588150] [2022-03-15 13:32:46,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029588150] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:32:46,747 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:32:46,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-15 13:32:46,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646494131] [2022-03-15 13:32:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:32:46,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:32:46,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:32:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:32:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:32:46,748 INFO L87 Difference]: Start difference. First operand 5388 states and 11028 transitions. Second operand has 32 states, 32 states have (on average 3.09375) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-15 13:32:49,169 WARN L244 SmtUtils]: Removed 16 from assertion stack [2022-03-15 13:32:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:32:49,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=582, Invalid=2388, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 13:32:49,170 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1145 mSDsluCounter, 5251 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:32:49,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 5582 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 13:32:49,171 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-03-15 13:32:49,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-03-15 13:32:49,172 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (5388states) and FLOYD_HOARE automaton (currently 26 states, 32 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 13ms.. [2022-03-15 13:32:49,173 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-03-15 13:32:49,173 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-03-15 13:32:49,173 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-03-15 13:32:49,173 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 7 remaining) [2022-03-15 13:32:49,173 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-03-15 13:32:49,173 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-03-15 13:32:49,175 INFO L732 BasicCegarLoop]: Path program histogram: [134, 24, 1, 1, 1] [2022-03-15 13:32:49,179 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 13:32:49,179 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 13:32:49,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 01:32:49 BasicIcfg [2022-03-15 13:32:49,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 13:32:49,181 INFO L158 Benchmark]: Toolchain (without parser) took 851923.47ms. Allocated memory was 213.9MB in the beginning and 805.3MB in the end (delta: 591.4MB). Free memory was 155.6MB in the beginning and 297.5MB in the end (delta: -141.9MB). Peak memory consumption was 450.5MB. Max. memory is 8.0GB. [2022-03-15 13:32:49,181 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 213.9MB. Free memory is still 173.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 13:32:49,181 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.31ms. Allocated memory was 213.9MB in the beginning and 295.7MB in the end (delta: 81.8MB). Free memory was 155.4MB in the beginning and 252.0MB in the end (delta: -96.5MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. [2022-03-15 13:32:49,181 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.13ms. Allocated memory is still 295.7MB. Free memory was 252.0MB in the beginning and 249.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-15 13:32:49,187 INFO L158 Benchmark]: Boogie Preprocessor took 19.92ms. Allocated memory is still 295.7MB. Free memory was 249.4MB in the beginning and 247.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 13:32:49,187 INFO L158 Benchmark]: RCFGBuilder took 358.46ms. Allocated memory is still 295.7MB. Free memory was 247.8MB in the beginning and 231.5MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-03-15 13:32:49,187 INFO L158 Benchmark]: TraceAbstraction took 851020.26ms. Allocated memory was 295.7MB in the beginning and 805.3MB in the end (delta: 509.6MB). Free memory was 231.0MB in the beginning and 297.5MB in the end (delta: -66.5MB). Peak memory consumption was 443.6MB. Max. memory is 8.0GB. [2022-03-15 13:32:49,187 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 213.9MB. Free memory is still 173.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 470.31ms. Allocated memory was 213.9MB in the beginning and 295.7MB in the end (delta: 81.8MB). Free memory was 155.4MB in the beginning and 252.0MB in the end (delta: -96.5MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.13ms. Allocated memory is still 295.7MB. Free memory was 252.0MB in the beginning and 249.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.92ms. Allocated memory is still 295.7MB. Free memory was 249.4MB in the beginning and 247.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 358.46ms. Allocated memory is still 295.7MB. Free memory was 247.8MB in the beginning and 231.5MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 851020.26ms. Allocated memory was 295.7MB in the beginning and 805.3MB in the end (delta: 509.6MB). Free memory was 231.0MB in the beginning and 297.5MB in the end (delta: -66.5MB). Peak memory consumption was 443.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 832]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (5388states) and FLOYD_HOARE automaton (currently 26 states, 32 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 13ms.. - TimeoutResultAtElement [Line: 836]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (5388states) and FLOYD_HOARE automaton (currently 26 states, 32 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 13ms.. - TimeoutResultAtElement [Line: 837]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (5388states) and FLOYD_HOARE automaton (currently 26 states, 32 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 13ms.. - TimeoutResultAtElement [Line: 854]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (5388states) and FLOYD_HOARE automaton (currently 26 states, 32 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 13ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 220 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 850.8s, OverallIterations: 161, TraceHistogramMax: 1, PathProgramHistogramMax: 134, EmptinessCheckTime: 0.7s, AutomataDifference: 725.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 253072 SdHoareTripleChecker+Valid, 206.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 253072 mSDsluCounter, 1519283 SdHoareTripleChecker+Invalid, 176.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1432644 mSDsCounter, 5839 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 560846 IncrementalHoareTripleChecker+Invalid, 566685 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5839 mSolverCounterUnsat, 86639 mSDtfsCounter, 560846 mSolverCounterSat, 3.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12706 GetRequests, 689 SyntacticMatches, 102 SemanticMatches, 11914 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162036 ImplicationChecksByTransitivity, 560.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5935occurred in iteration=98, InterpolantAutomatonStates: 7671, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.9s AutomataMinimizationTime, 160 MinimizatonAttempts, 402570 StatesRemovedByMinimization, 159 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 110.3s InterpolantComputationTime, 15725 NumberOfCodeBlocks, 15725 NumberOfCodeBlocksAsserted, 161 NumberOfCheckSat, 15564 ConstructedInterpolants, 0 QuantifiedInterpolants, 279205 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 161 InterpolantComputations, 161 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown