/usr/bin/java -Xmx16000000000 -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 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 18:29:26,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 18:29:26,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 18:29:26,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 18:29:26,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 18:29:26,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 18:29:26,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 18:29:26,748 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 [2021-03-10 18:29:26,791 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 18:29:26,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 18:29:26,793 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 18:29:26,793 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 18:29:26,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 18:29:26,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 18:29:26,797 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 18:29:26,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 18:29:26,798 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 18:29:26,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 18:29:26,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 18:29:26,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 18:29:26,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 18:29:26,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 18:29:26,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 18:29:26,800 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 18:29:26,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 18:29:26,800 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 18:29:26,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 18:29:26,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 18:29:26,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 18:29:26,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 18:29:26,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 18:29:26,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 18:29:26,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 18:29:26,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 18:29:26,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 18:29:26,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 18:29:26,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 18:29:26,802 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 18:29:26,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 18:29:26,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 18:29:27,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 18:29:27,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 18:29:27,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 18:29:27,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 18:29:27,158 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 18:29:27,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2021-03-10 18:29:27,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9903bfdeb/eb0344b462fd4845b75845268bdccc08/FLAG6b24fb4f2 [2021-03-10 18:29:27,889 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 18:29:27,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2021-03-10 18:29:27,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9903bfdeb/eb0344b462fd4845b75845268bdccc08/FLAG6b24fb4f2 [2021-03-10 18:29:28,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9903bfdeb/eb0344b462fd4845b75845268bdccc08 [2021-03-10 18:29:28,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 18:29:28,133 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 18:29:28,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 18:29:28,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 18:29:28,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 18:29:28,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 06:29:28" (1/1) ... [2021-03-10 18:29:28,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed4e89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28, skipping insertion in model container [2021-03-10 18:29:28,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 06:29:28" (1/1) ... [2021-03-10 18:29:28,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 18:29:28,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 18:29:28,340 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-10 18:29:28,600 WARN L226 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] [2021-03-10 18:29:28,605 WARN L226 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] [2021-03-10 18:29:28,605 WARN L226 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] [2021-03-10 18:29:28,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 18:29:28,618 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 18:29:28,629 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-10 18:29:28,660 WARN L226 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] [2021-03-10 18:29:28,662 WARN L226 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] [2021-03-10 18:29:28,662 WARN L226 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] [2021-03-10 18:29:28,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 18:29:28,754 INFO L208 MainTranslator]: Completed translation [2021-03-10 18:29:28,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28 WrapperNode [2021-03-10 18:29:28,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 18:29:28,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 18:29:28,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 18:29:28,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 18:29:28,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28" (1/1) ... [2021-03-10 18:29:28,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28" (1/1) ... [2021-03-10 18:29:28,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 18:29:28,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 18:29:28,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 18:29:28,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 18:29:28,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28" (1/1) ... [2021-03-10 18:29:28,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28" (1/1) ... [2021-03-10 18:29:28,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28" (1/1) ... [2021-03-10 18:29:28,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28" (1/1) ... [2021-03-10 18:29:28,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28" (1/1) ... [2021-03-10 18:29:28,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28" (1/1) ... [2021-03-10 18:29:28,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28" (1/1) ... [2021-03-10 18:29:28,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 18:29:28,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 18:29:28,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 18:29:28,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 18:29:28,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 18:29:28,921 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2021-03-10 18:29:28,921 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2021-03-10 18:29:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 18:29:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 18:29:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-10 18:29:28,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 18:29:28,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 18:29:28,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 18:29:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 18:29:28,926 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 18:29:29,577 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 18:29:29,577 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-03-10 18:29:29,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 06:29:29 BoogieIcfgContainer [2021-03-10 18:29:29,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 18:29:29,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 18:29:29,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 18:29:29,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 18:29:29,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 06:29:28" (1/3) ... [2021-03-10 18:29:29,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3a73ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 06:29:29, skipping insertion in model container [2021-03-10 18:29:29,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:29:28" (2/3) ... [2021-03-10 18:29:29,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3a73ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 06:29:29, skipping insertion in model container [2021-03-10 18:29:29,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 06:29:29" (3/3) ... [2021-03-10 18:29:29,586 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2021-03-10 18:29:29,591 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 18:29:29,592 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 18:29:29,596 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-03-10 18:29:29,597 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 18:29:29,661 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,661 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,662 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,662 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,662 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,662 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,662 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,662 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,663 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,663 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,663 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,663 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,663 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,663 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,663 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,663 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,663 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,664 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,664 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,664 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,664 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,664 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,664 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,664 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,664 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,665 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,665 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,665 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,665 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,665 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,665 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,665 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,665 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,665 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,666 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,666 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,666 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,666 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,666 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,666 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,666 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,666 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,667 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,667 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,667 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,667 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,667 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,667 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,667 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,667 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,668 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,668 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,668 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,668 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,668 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,668 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,668 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,668 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,668 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,668 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,669 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,669 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,669 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,669 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,669 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,669 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,669 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,669 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,669 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,669 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,670 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,670 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,670 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,670 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,670 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,670 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,670 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,670 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,670 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,671 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,671 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,671 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,671 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,671 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,671 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,671 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,671 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,672 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,672 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,672 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,672 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,672 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,672 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,672 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,672 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,673 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,673 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,673 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,673 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,673 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,673 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,673 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,673 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,673 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,674 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,674 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,674 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,674 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,674 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,674 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,674 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,674 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,675 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,675 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,675 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,675 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,675 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,675 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,675 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,675 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,676 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,676 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,676 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,676 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,676 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,676 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,676 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,677 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,677 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,677 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,677 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,677 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,677 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,677 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,678 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,678 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,678 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,678 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,678 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,678 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,678 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,679 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,679 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,679 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,679 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,679 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,679 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,680 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,680 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,680 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,680 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,680 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,680 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,680 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,680 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,681 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,681 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,681 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,681 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,681 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,681 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,681 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,682 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,682 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,682 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,682 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,682 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,682 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,682 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,682 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,682 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,683 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,683 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,683 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,683 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,683 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,683 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,683 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,684 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,684 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,684 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,684 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,684 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,684 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,684 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,684 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,684 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,685 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,685 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,685 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,685 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,685 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,685 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,685 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,685 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,686 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,686 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,686 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,686 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,686 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,686 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,686 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,686 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,687 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,687 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,687 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,687 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,687 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,687 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,687 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,688 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,688 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,688 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,688 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,688 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,688 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,688 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,689 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,689 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,689 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,689 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,689 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,689 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,689 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,690 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,690 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,690 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,690 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,690 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,690 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,690 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,691 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,701 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,701 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,701 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,702 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,702 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,702 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,702 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,702 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,702 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,702 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,703 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,703 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,703 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,703 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,703 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,703 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,703 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,704 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,704 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,704 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,704 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,704 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,704 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,704 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,706 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,723 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,723 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,723 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,724 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,724 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,724 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,724 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,724 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,724 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,724 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,724 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,725 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,725 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,725 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,725 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,725 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,725 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,725 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,725 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,726 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,726 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,726 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,726 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,726 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,726 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,726 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,726 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,727 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:29:29,733 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-10 18:29:29,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-10 18:29:29,784 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 18:29:29,784 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 18:29:29,784 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 18:29:29,784 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 18:29:29,784 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 18:29:29,784 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 18:29:29,784 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 18:29:29,784 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 18:29:29,811 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 133 places, 139 transitions, 286 flow [2021-03-10 18:29:29,903 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2145 states, 2141 states have (on average 2.1550677253619805) internal successors, (4614), 2144 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:29,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 2145 states, 2141 states have (on average 2.1550677253619805) internal successors, (4614), 2144 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:29,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-03-10 18:29:29,920 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:29:29,920 INFO L519 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] [2021-03-10 18:29:29,921 INFO L428 AbstractCegarLoop]: === Iteration 1 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:29:29,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:29:29,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1330572047, now seen corresponding path program 1 times [2021-03-10 18:29:29,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:29:29,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082598606] [2021-03-10 18:29:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:29:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:29:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:29:30,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082598606] [2021-03-10 18:29:30,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:29:30,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 18:29:30,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856858748] [2021-03-10 18:29:30,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-10 18:29:30,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:29:30,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-10 18:29:30,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-10 18:29:30,144 INFO L87 Difference]: Start difference. First operand has 2145 states, 2141 states have (on average 2.1550677253619805) internal successors, (4614), 2144 states have internal predecessors, (4614), 0 states have call successors, (0), 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 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:29:30,206 INFO L93 Difference]: Finished difference Result 2145 states and 4354 transitions. [2021-03-10 18:29:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-10 18:29:30,207 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-03-10 18:29:30,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:29:30,236 INFO L225 Difference]: With dead ends: 2145 [2021-03-10 18:29:30,237 INFO L226 Difference]: Without dead ends: 2005 [2021-03-10 18:29:30,238 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-10 18:29:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2021-03-10 18:29:30,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 2005. [2021-03-10 18:29:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 2002 states have (on average 2.036963036963037) internal successors, (4078), 2004 states have internal predecessors, (4078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 4078 transitions. [2021-03-10 18:29:30,428 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 4078 transitions. Word has length 33 [2021-03-10 18:29:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:29:30,428 INFO L480 AbstractCegarLoop]: Abstraction has 2005 states and 4078 transitions. [2021-03-10 18:29:30,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 4078 transitions. [2021-03-10 18:29:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-03-10 18:29:30,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:29:30,432 INFO L519 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] [2021-03-10 18:29:30,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 18:29:30,432 INFO L428 AbstractCegarLoop]: === Iteration 2 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:29:30,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:29:30,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1701970972, now seen corresponding path program 1 times [2021-03-10 18:29:30,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:29:30,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478334540] [2021-03-10 18:29:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:29:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:29:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:29:30,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478334540] [2021-03-10 18:29:30,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:29:30,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 18:29:30,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688126607] [2021-03-10 18:29:30,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 18:29:30,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:29:30,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 18:29:30,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 18:29:30,524 INFO L87 Difference]: Start difference. First operand 2005 states and 4078 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:30,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:29:30,584 INFO L93 Difference]: Finished difference Result 3259 states and 6657 transitions. [2021-03-10 18:29:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 18:29:30,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-03-10 18:29:30,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:29:30,600 INFO L225 Difference]: With dead ends: 3259 [2021-03-10 18:29:30,601 INFO L226 Difference]: Without dead ends: 3259 [2021-03-10 18:29:30,603 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 18:29:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2021-03-10 18:29:30,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 2467. [2021-03-10 18:29:30,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2464 states have (on average 2.049107142857143) internal successors, (5049), 2466 states have internal predecessors, (5049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 5049 transitions. [2021-03-10 18:29:30,700 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 5049 transitions. Word has length 34 [2021-03-10 18:29:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:29:30,701 INFO L480 AbstractCegarLoop]: Abstraction has 2467 states and 5049 transitions. [2021-03-10 18:29:30,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 5049 transitions. [2021-03-10 18:29:30,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-03-10 18:29:30,711 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:29:30,712 INFO L519 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] [2021-03-10 18:29:30,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 18:29:30,713 INFO L428 AbstractCegarLoop]: === Iteration 3 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:29:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:29:30,713 INFO L82 PathProgramCache]: Analyzing trace with hash 155975240, now seen corresponding path program 1 times [2021-03-10 18:29:30,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:29:30,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921965687] [2021-03-10 18:29:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:29:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:29:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:29:31,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921965687] [2021-03-10 18:29:31,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:29:31,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-10 18:29:31,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243165381] [2021-03-10 18:29:31,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 18:29:31,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:29:31,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 18:29:31,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-03-10 18:29:31,379 INFO L87 Difference]: Start difference. First operand 2467 states and 5049 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:32,099 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-03-10 18:29:32,249 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-03-10 18:29:32,538 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2021-03-10 18:29:32,719 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2021-03-10 18:29:32,877 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-03-10 18:29:33,058 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2021-03-10 18:29:33,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:29:33,809 INFO L93 Difference]: Finished difference Result 2781 states and 5695 transitions. [2021-03-10 18:29:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 18:29:33,811 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-03-10 18:29:33,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:29:33,823 INFO L225 Difference]: With dead ends: 2781 [2021-03-10 18:29:33,823 INFO L226 Difference]: Without dead ends: 2666 [2021-03-10 18:29:33,825 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1924.9ms TimeCoverageRelationStatistics Valid=359, Invalid=973, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 18:29:33,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2021-03-10 18:29:33,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2478. [2021-03-10 18:29:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2475 states have (on average 2.052929292929293) internal successors, (5081), 2477 states have internal predecessors, (5081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 5081 transitions. [2021-03-10 18:29:33,906 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 5081 transitions. Word has length 63 [2021-03-10 18:29:33,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:29:33,906 INFO L480 AbstractCegarLoop]: Abstraction has 2478 states and 5081 transitions. [2021-03-10 18:29:33,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:33,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 5081 transitions. [2021-03-10 18:29:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:29:33,910 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:29:33,910 INFO L519 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] [2021-03-10 18:29:33,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 18:29:33,911 INFO L428 AbstractCegarLoop]: === Iteration 4 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:29:33,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:29:33,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1459840288, now seen corresponding path program 1 times [2021-03-10 18:29:33,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:29:33,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405103342] [2021-03-10 18:29:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:29:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:29:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:29:34,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405103342] [2021-03-10 18:29:34,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:29:34,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:29:34,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752503003] [2021-03-10 18:29:34,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:29:34,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:29:34,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:29:34,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:29:34,817 INFO L87 Difference]: Start difference. First operand 2478 states and 5081 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:35,693 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2021-03-10 18:29:35,834 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2021-03-10 18:29:36,146 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-10 18:29:36,326 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-10 18:29:36,746 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-10 18:29:36,904 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-03-10 18:29:37,043 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-03-10 18:29:37,181 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-03-10 18:29:37,380 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:29:37,553 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:29:37,710 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-03-10 18:29:37,928 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:29:38,138 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:29:38,366 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:29:38,576 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:29:38,764 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:29:39,024 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:29:39,269 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:29:39,479 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:29:39,701 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2021-03-10 18:29:39,942 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 83 [2021-03-10 18:29:40,243 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:29:40,489 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:29:40,614 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2021-03-10 18:29:40,891 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:29:41,272 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-03-10 18:29:42,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:29:42,064 INFO L93 Difference]: Finished difference Result 2973 states and 6090 transitions. [2021-03-10 18:29:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 18:29:42,065 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:29:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:29:42,077 INFO L225 Difference]: With dead ends: 2973 [2021-03-10 18:29:42,077 INFO L226 Difference]: Without dead ends: 2973 [2021-03-10 18:29:42,079 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 6444.7ms TimeCoverageRelationStatistics Valid=1486, Invalid=4064, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 18:29:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2021-03-10 18:29:42,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 2500. [2021-03-10 18:29:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2500 states, 2497 states have (on average 2.052863436123348) internal successors, (5126), 2499 states have internal predecessors, (5126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 5126 transitions. [2021-03-10 18:29:42,154 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 5126 transitions. Word has length 82 [2021-03-10 18:29:42,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:29:42,155 INFO L480 AbstractCegarLoop]: Abstraction has 2500 states and 5126 transitions. [2021-03-10 18:29:42,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:42,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 5126 transitions. [2021-03-10 18:29:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:29:42,159 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:29:42,159 INFO L519 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] [2021-03-10 18:29:42,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 18:29:42,159 INFO L428 AbstractCegarLoop]: === Iteration 5 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:29:42,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:29:42,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1287117670, now seen corresponding path program 2 times [2021-03-10 18:29:42,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:29:42,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416802188] [2021-03-10 18:29:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:29:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:29:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:29:42,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416802188] [2021-03-10 18:29:42,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:29:42,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:29:42,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918647703] [2021-03-10 18:29:42,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:29:42,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:29:42,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:29:42,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:29:42,970 INFO L87 Difference]: Start difference. First operand 2500 states and 5126 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:43,840 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2021-03-10 18:29:44,853 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-10 18:29:45,276 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-03-10 18:29:45,408 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:29:45,581 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-03-10 18:29:45,718 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-03-10 18:29:45,864 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:29:46,062 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:29:46,219 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-03-10 18:29:46,421 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:29:46,648 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:29:46,786 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2021-03-10 18:29:46,963 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:29:47,122 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:29:47,323 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:29:47,477 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:29:47,693 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:29:47,872 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:29:48,109 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:29:48,342 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:29:48,571 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:29:48,760 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:29:48,979 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2021-03-10 18:29:49,254 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 83 [2021-03-10 18:29:49,584 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:29:49,813 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:29:50,168 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:29:51,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:29:51,133 INFO L93 Difference]: Finished difference Result 3202 states and 6561 transitions. [2021-03-10 18:29:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 18:29:51,134 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:29:51,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:29:51,147 INFO L225 Difference]: With dead ends: 3202 [2021-03-10 18:29:51,147 INFO L226 Difference]: Without dead ends: 3202 [2021-03-10 18:29:51,149 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1233 ImplicationChecksByTransitivity, 7370.0ms TimeCoverageRelationStatistics Valid=1825, Invalid=5147, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 18:29:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2021-03-10 18:29:51,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 2507. [2021-03-10 18:29:51,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2504 states have (on average 2.0527156549520766) internal successors, (5140), 2506 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 5140 transitions. [2021-03-10 18:29:51,221 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 5140 transitions. Word has length 82 [2021-03-10 18:29:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:29:51,222 INFO L480 AbstractCegarLoop]: Abstraction has 2507 states and 5140 transitions. [2021-03-10 18:29:51,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 5140 transitions. [2021-03-10 18:29:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:29:51,226 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:29:51,226 INFO L519 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] [2021-03-10 18:29:51,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 18:29:51,226 INFO L428 AbstractCegarLoop]: === Iteration 6 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:29:51,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:29:51,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1588004984, now seen corresponding path program 3 times [2021-03-10 18:29:51,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:29:51,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612249438] [2021-03-10 18:29:51,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:29:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:29:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:29:51,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612249438] [2021-03-10 18:29:51,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:29:51,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:29:51,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205784617] [2021-03-10 18:29:51,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:29:51,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:29:51,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:29:51,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:29:51,942 INFO L87 Difference]: Start difference. First operand 2507 states and 5140 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:29:52,757 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2021-03-10 18:29:52,909 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2021-03-10 18:29:53,425 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-10 18:29:53,830 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-10 18:29:54,347 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:29:54,618 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-03-10 18:29:54,826 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:29:55,064 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:29:55,213 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-03-10 18:29:55,361 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:29:55,564 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:29:55,714 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2021-03-10 18:29:55,866 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:29:56,084 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:29:56,257 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:29:56,469 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:29:56,624 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:29:56,801 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:29:57,009 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:29:57,212 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:29:57,431 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:29:57,643 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-10 18:29:57,891 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:29:58,148 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:29:58,356 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:29:58,562 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:29:58,773 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:29:58,995 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-10 18:29:59,287 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-03-10 18:29:59,537 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-03-10 18:29:59,832 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:30:00,071 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:30:00,475 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:30:01,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:30:01,379 INFO L93 Difference]: Finished difference Result 3174 states and 6505 transitions. [2021-03-10 18:30:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-10 18:30:01,380 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:30:01,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:30:01,392 INFO L225 Difference]: With dead ends: 3174 [2021-03-10 18:30:01,392 INFO L226 Difference]: Without dead ends: 3174 [2021-03-10 18:30:01,395 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 8476.7ms TimeCoverageRelationStatistics Valid=2076, Invalid=5934, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 18:30:01,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2021-03-10 18:30:01,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2518. [2021-03-10 18:30:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2515 states have (on average 2.052882703777336) internal successors, (5163), 2517 states have internal predecessors, (5163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 5163 transitions. [2021-03-10 18:30:01,474 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 5163 transitions. Word has length 82 [2021-03-10 18:30:01,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:30:01,474 INFO L480 AbstractCegarLoop]: Abstraction has 2518 states and 5163 transitions. [2021-03-10 18:30:01,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 5163 transitions. [2021-03-10 18:30:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:30:01,478 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:30:01,478 INFO L519 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] [2021-03-10 18:30:01,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 18:30:01,479 INFO L428 AbstractCegarLoop]: === Iteration 7 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:30:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:30:01,479 INFO L82 PathProgramCache]: Analyzing trace with hash -778646510, now seen corresponding path program 4 times [2021-03-10 18:30:01,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:30:01,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588998092] [2021-03-10 18:30:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:30:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:30:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:30:02,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588998092] [2021-03-10 18:30:02,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:30:02,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:30:02,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924125855] [2021-03-10 18:30:02,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:30:02,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:30:02,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:30:02,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:30:02,405 INFO L87 Difference]: Start difference. First operand 2518 states and 5163 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:04,112 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-03-10 18:30:04,515 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-03-10 18:30:04,657 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:30:04,926 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-03-10 18:30:05,086 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:30:05,294 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-03-10 18:30:05,484 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:30:05,623 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-03-10 18:30:05,840 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2021-03-10 18:30:05,980 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2021-03-10 18:30:06,149 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:30:06,328 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:30:06,514 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-03-10 18:30:06,765 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-03-10 18:30:06,945 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-03-10 18:30:07,155 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:30:07,354 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:30:07,568 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-03-10 18:30:07,824 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:30:08,029 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2021-03-10 18:30:08,255 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-03-10 18:30:08,478 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:30:08,756 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-03-10 18:30:08,982 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-03-10 18:30:09,254 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:30:09,458 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-10 18:30:09,706 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-03-10 18:30:10,009 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-03-10 18:30:10,284 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2021-03-10 18:30:10,509 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2021-03-10 18:30:10,766 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-03-10 18:30:11,021 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-03-10 18:30:11,289 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2021-03-10 18:30:11,576 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2021-03-10 18:30:11,920 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2021-03-10 18:30:12,199 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-03-10 18:30:12,555 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2021-03-10 18:30:12,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:30:12,910 INFO L93 Difference]: Finished difference Result 3288 states and 6733 transitions. [2021-03-10 18:30:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-10 18:30:12,911 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:30:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:30:12,923 INFO L225 Difference]: With dead ends: 3288 [2021-03-10 18:30:12,923 INFO L226 Difference]: Without dead ends: 3288 [2021-03-10 18:30:12,925 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 9795.4ms TimeCoverageRelationStatistics Valid=2187, Invalid=5295, Unknown=0, NotChecked=0, Total=7482 [2021-03-10 18:30:12,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2021-03-10 18:30:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 2787. [2021-03-10 18:30:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2784 states have (on average 2.0520833333333335) internal successors, (5713), 2786 states have internal predecessors, (5713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:12,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 5713 transitions. [2021-03-10 18:30:13,000 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 5713 transitions. Word has length 82 [2021-03-10 18:30:13,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:30:13,000 INFO L480 AbstractCegarLoop]: Abstraction has 2787 states and 5713 transitions. [2021-03-10 18:30:13,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:13,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 5713 transitions. [2021-03-10 18:30:13,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:30:13,004 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:30:13,005 INFO L519 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] [2021-03-10 18:30:13,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 18:30:13,005 INFO L428 AbstractCegarLoop]: === Iteration 8 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:30:13,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:30:13,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1732309788, now seen corresponding path program 5 times [2021-03-10 18:30:13,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:30:13,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360885544] [2021-03-10 18:30:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:30:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:30:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:30:13,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360885544] [2021-03-10 18:30:13,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:30:13,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:30:13,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254277434] [2021-03-10 18:30:13,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:30:13,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:30:13,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:30:13,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:30:13,615 INFO L87 Difference]: Start difference. First operand 2787 states and 5713 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:14,879 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:30:15,046 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:30:15,222 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:30:15,422 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:30:15,625 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:30:15,783 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:30:15,992 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:30:16,200 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:30:16,383 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:30:16,576 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:30:16,789 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:30:17,018 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:30:17,214 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:30:17,465 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2021-03-10 18:30:17,711 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 83 [2021-03-10 18:30:17,996 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:30:18,223 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:30:18,567 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:30:19,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:30:19,624 INFO L93 Difference]: Finished difference Result 3772 states and 7730 transitions. [2021-03-10 18:30:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 18:30:19,625 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:30:19,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:30:19,635 INFO L225 Difference]: With dead ends: 3772 [2021-03-10 18:30:19,635 INFO L226 Difference]: Without dead ends: 3772 [2021-03-10 18:30:19,636 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 5243.3ms TimeCoverageRelationStatistics Valid=1214, Invalid=3478, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 18:30:19,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2021-03-10 18:30:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 2899. [2021-03-10 18:30:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2896 states have (on average 2.050414364640884) internal successors, (5938), 2898 states have internal predecessors, (5938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 5938 transitions. [2021-03-10 18:30:19,713 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 5938 transitions. Word has length 82 [2021-03-10 18:30:19,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:30:19,714 INFO L480 AbstractCegarLoop]: Abstraction has 2899 states and 5938 transitions. [2021-03-10 18:30:19,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:19,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 5938 transitions. [2021-03-10 18:30:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:30:19,719 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:30:19,719 INFO L519 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] [2021-03-10 18:30:19,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 18:30:19,719 INFO L428 AbstractCegarLoop]: === Iteration 9 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:30:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:30:19,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1142812866, now seen corresponding path program 6 times [2021-03-10 18:30:19,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:30:19,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531006559] [2021-03-10 18:30:19,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:30:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:30:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:30:20,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531006559] [2021-03-10 18:30:20,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:30:20,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:30:20,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101009266] [2021-03-10 18:30:20,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:30:20,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:30:20,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:30:20,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:30:20,371 INFO L87 Difference]: Start difference. First operand 2899 states and 5938 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:21,268 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2021-03-10 18:30:21,645 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:30:21,817 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:30:21,997 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:30:22,199 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:30:22,354 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:30:22,589 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:30:22,767 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:30:22,982 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:30:23,175 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:30:23,375 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:30:23,562 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:30:23,755 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:30:23,938 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-10 18:30:24,140 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:30:24,373 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:30:24,574 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:30:24,798 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:30:24,997 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:30:25,207 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-10 18:30:25,472 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-03-10 18:30:25,718 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-03-10 18:30:26,043 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:30:26,277 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:30:26,617 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:30:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:30:27,581 INFO L93 Difference]: Finished difference Result 3910 states and 8019 transitions. [2021-03-10 18:30:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 18:30:27,582 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:30:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:30:27,590 INFO L225 Difference]: With dead ends: 3910 [2021-03-10 18:30:27,590 INFO L226 Difference]: Without dead ends: 3910 [2021-03-10 18:30:27,591 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 6351.1ms TimeCoverageRelationStatistics Valid=1447, Invalid=4103, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 18:30:27,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2021-03-10 18:30:27,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 2910. [2021-03-10 18:30:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2907 states have (on average 2.050567595459236) internal successors, (5961), 2909 states have internal predecessors, (5961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 5961 transitions. [2021-03-10 18:30:27,661 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 5961 transitions. Word has length 82 [2021-03-10 18:30:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:30:27,661 INFO L480 AbstractCegarLoop]: Abstraction has 2910 states and 5961 transitions. [2021-03-10 18:30:27,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 5961 transitions. [2021-03-10 18:30:27,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:30:27,665 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:30:27,665 INFO L519 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] [2021-03-10 18:30:27,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 18:30:27,665 INFO L428 AbstractCegarLoop]: === Iteration 10 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:30:27,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:30:27,666 INFO L82 PathProgramCache]: Analyzing trace with hash -333454392, now seen corresponding path program 7 times [2021-03-10 18:30:27,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:30:27,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200677716] [2021-03-10 18:30:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:30:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:30:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:30:28,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200677716] [2021-03-10 18:30:28,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:30:28,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:30:28,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252217408] [2021-03-10 18:30:28,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:30:28,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:30:28,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:30:28,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:30:28,336 INFO L87 Difference]: Start difference. First operand 2910 states and 5961 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:29,862 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-03-10 18:30:30,133 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2021-03-10 18:30:30,415 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-03-10 18:30:30,565 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2021-03-10 18:30:30,857 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-03-10 18:30:31,010 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2021-03-10 18:30:31,308 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-03-10 18:30:31,483 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2021-03-10 18:30:31,696 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-03-10 18:30:31,865 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:30:32,010 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2021-03-10 18:30:32,253 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-03-10 18:30:32,401 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-03-10 18:30:32,580 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2021-03-10 18:30:32,769 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2021-03-10 18:30:32,966 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:30:33,210 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-10 18:30:33,378 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2021-03-10 18:30:33,588 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-03-10 18:30:33,802 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-03-10 18:30:34,046 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-03-10 18:30:34,284 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-03-10 18:30:34,497 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2021-03-10 18:30:34,740 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-03-10 18:30:34,960 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-03-10 18:30:35,234 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-03-10 18:30:35,475 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2021-03-10 18:30:35,721 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-03-10 18:30:35,944 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-03-10 18:30:36,196 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-03-10 18:30:36,522 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2021-03-10 18:30:36,825 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-03-10 18:30:37,063 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-03-10 18:30:37,348 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-03-10 18:30:37,620 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-03-10 18:30:37,878 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:30:38,185 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-03-10 18:30:38,535 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 89 [2021-03-10 18:30:38,877 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-03-10 18:30:39,274 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 88 [2021-03-10 18:30:39,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:30:39,664 INFO L93 Difference]: Finished difference Result 3845 states and 7878 transitions. [2021-03-10 18:30:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-03-10 18:30:39,665 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:30:39,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:30:39,677 INFO L225 Difference]: With dead ends: 3845 [2021-03-10 18:30:39,677 INFO L226 Difference]: Without dead ends: 3845 [2021-03-10 18:30:39,679 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 10350.5ms TimeCoverageRelationStatistics Valid=2346, Invalid=5664, Unknown=0, NotChecked=0, Total=8010 [2021-03-10 18:30:39,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2021-03-10 18:30:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 2844. [2021-03-10 18:30:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2841 states have (on average 2.051742344244984) internal successors, (5829), 2843 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 5829 transitions. [2021-03-10 18:30:39,750 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 5829 transitions. Word has length 82 [2021-03-10 18:30:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:30:39,750 INFO L480 AbstractCegarLoop]: Abstraction has 2844 states and 5829 transitions. [2021-03-10 18:30:39,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 5829 transitions. [2021-03-10 18:30:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:30:39,754 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:30:39,755 INFO L519 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] [2021-03-10 18:30:39,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 18:30:39,755 INFO L428 AbstractCegarLoop]: === Iteration 11 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:30:39,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:30:39,755 INFO L82 PathProgramCache]: Analyzing trace with hash 289990434, now seen corresponding path program 8 times [2021-03-10 18:30:39,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:30:39,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555303027] [2021-03-10 18:30:39,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:30:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:30:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:30:40,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555303027] [2021-03-10 18:30:40,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:30:40,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:30:40,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406897256] [2021-03-10 18:30:40,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:30:40,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:30:40,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:30:40,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:30:40,438 INFO L87 Difference]: Start difference. First operand 2844 states and 5829 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:41,178 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2021-03-10 18:30:41,849 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:30:42,087 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:30:42,282 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:30:42,495 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:30:42,665 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:30:42,885 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:30:43,084 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:30:43,294 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:30:43,505 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-10 18:30:43,712 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:30:43,930 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:30:44,159 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-10 18:30:44,358 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:30:44,549 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:30:44,824 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-03-10 18:30:45,093 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-03-10 18:30:45,340 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:30:45,581 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:30:45,989 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:30:46,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:30:46,888 INFO L93 Difference]: Finished difference Result 3681 states and 7552 transitions. [2021-03-10 18:30:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 18:30:46,890 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:30:46,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:30:46,898 INFO L225 Difference]: With dead ends: 3681 [2021-03-10 18:30:46,899 INFO L226 Difference]: Without dead ends: 3681 [2021-03-10 18:30:46,900 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 5617.9ms TimeCoverageRelationStatistics Valid=1238, Invalid=3592, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 18:30:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2021-03-10 18:30:46,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 2892. [2021-03-10 18:30:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2889 states have (on average 2.051574939425407) internal successors, (5927), 2891 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:46,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 5927 transitions. [2021-03-10 18:30:46,968 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 5927 transitions. Word has length 82 [2021-03-10 18:30:46,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:30:46,969 INFO L480 AbstractCegarLoop]: Abstraction has 2892 states and 5927 transitions. [2021-03-10 18:30:46,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:46,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 5927 transitions. [2021-03-10 18:30:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:30:46,973 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:30:46,973 INFO L519 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] [2021-03-10 18:30:46,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-10 18:30:46,974 INFO L428 AbstractCegarLoop]: === Iteration 12 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:30:46,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:30:46,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1099348908, now seen corresponding path program 9 times [2021-03-10 18:30:46,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:30:46,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402839649] [2021-03-10 18:30:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:30:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:30:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:30:47,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402839649] [2021-03-10 18:30:47,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:30:47,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:30:47,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295360481] [2021-03-10 18:30:47,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:30:47,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:30:47,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:30:47,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:30:47,666 INFO L87 Difference]: Start difference. First operand 2892 states and 5927 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:48,677 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2021-03-10 18:30:49,187 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-03-10 18:30:49,333 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-03-10 18:30:49,472 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2021-03-10 18:30:49,755 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-03-10 18:30:49,899 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2021-03-10 18:30:50,199 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-03-10 18:30:50,354 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-03-10 18:30:50,527 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2021-03-10 18:30:50,816 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-03-10 18:30:50,986 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:30:51,277 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-03-10 18:30:51,501 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:30:51,698 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2021-03-10 18:30:52,013 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2021-03-10 18:30:52,175 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-03-10 18:30:52,358 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2021-03-10 18:30:52,563 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-03-10 18:30:52,759 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:30:53,012 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-10 18:30:53,180 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2021-03-10 18:30:53,390 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-03-10 18:30:53,609 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-03-10 18:30:53,832 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-03-10 18:30:54,076 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-03-10 18:30:54,302 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2021-03-10 18:30:54,544 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-03-10 18:30:54,764 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-03-10 18:30:55,041 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-03-10 18:30:55,287 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2021-03-10 18:30:55,530 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-03-10 18:30:55,756 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-03-10 18:30:56,015 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-03-10 18:30:56,356 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2021-03-10 18:30:56,650 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-03-10 18:30:56,889 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-03-10 18:30:57,167 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-03-10 18:30:57,445 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-03-10 18:30:57,725 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:30:58,036 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-03-10 18:30:58,388 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 89 [2021-03-10 18:30:58,682 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-03-10 18:30:59,071 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 88 [2021-03-10 18:30:59,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:30:59,472 INFO L93 Difference]: Finished difference Result 3745 states and 7678 transitions. [2021-03-10 18:30:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-03-10 18:30:59,473 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:30:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:30:59,481 INFO L225 Difference]: With dead ends: 3745 [2021-03-10 18:30:59,482 INFO L226 Difference]: Without dead ends: 3745 [2021-03-10 18:30:59,483 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 10772.0ms TimeCoverageRelationStatistics Valid=2392, Invalid=5798, Unknown=0, NotChecked=0, Total=8190 [2021-03-10 18:30:59,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2021-03-10 18:30:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 2850. [2021-03-10 18:30:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2847 states have (on average 2.0516332982086407) internal successors, (5841), 2849 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:59,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 5841 transitions. [2021-03-10 18:30:59,550 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 5841 transitions. Word has length 82 [2021-03-10 18:30:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:30:59,551 INFO L480 AbstractCegarLoop]: Abstraction has 2850 states and 5841 transitions. [2021-03-10 18:30:59,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:30:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 5841 transitions. [2021-03-10 18:30:59,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:30:59,555 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:30:59,555 INFO L519 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] [2021-03-10 18:30:59,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-10 18:30:59,556 INFO L428 AbstractCegarLoop]: === Iteration 13 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:30:59,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:30:59,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1190350300, now seen corresponding path program 10 times [2021-03-10 18:30:59,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:30:59,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020280079] [2021-03-10 18:30:59,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:30:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:31:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:31:00,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020280079] [2021-03-10 18:31:00,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:31:00,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:31:00,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372828738] [2021-03-10 18:31:00,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:31:00,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:31:00,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:31:00,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:31:00,219 INFO L87 Difference]: Start difference. First operand 2850 states and 5841 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:01,276 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-10 18:31:01,539 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:31:01,752 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-03-10 18:31:02,039 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-03-10 18:31:02,264 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-03-10 18:31:02,479 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2021-03-10 18:31:02,680 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-03-10 18:31:02,889 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2021-03-10 18:31:03,105 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2021-03-10 18:31:03,311 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-03-10 18:31:03,559 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2021-03-10 18:31:03,815 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:31:04,046 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 82 [2021-03-10 18:31:04,273 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2021-03-10 18:31:04,665 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2021-03-10 18:31:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:31:05,594 INFO L93 Difference]: Finished difference Result 3537 states and 7252 transitions. [2021-03-10 18:31:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:31:05,595 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:31:05,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:31:05,604 INFO L225 Difference]: With dead ends: 3537 [2021-03-10 18:31:05,604 INFO L226 Difference]: Without dead ends: 3537 [2021-03-10 18:31:05,606 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 4534.2ms TimeCoverageRelationStatistics Valid=1029, Invalid=3131, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:31:05,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2021-03-10 18:31:05,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 2971. [2021-03-10 18:31:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2968 states have (on average 2.0539083557951483) internal successors, (6096), 2970 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 6096 transitions. [2021-03-10 18:31:05,669 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 6096 transitions. Word has length 82 [2021-03-10 18:31:05,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:31:05,669 INFO L480 AbstractCegarLoop]: Abstraction has 2971 states and 6096 transitions. [2021-03-10 18:31:05,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:05,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 6096 transitions. [2021-03-10 18:31:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:31:05,674 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:31:05,674 INFO L519 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] [2021-03-10 18:31:05,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-10 18:31:05,674 INFO L428 AbstractCegarLoop]: === Iteration 14 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:31:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:31:05,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1999708774, now seen corresponding path program 11 times [2021-03-10 18:31:05,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:31:05,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865811432] [2021-03-10 18:31:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:31:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:31:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:31:06,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865811432] [2021-03-10 18:31:06,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:31:06,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:31:06,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446487402] [2021-03-10 18:31:06,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:31:06,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:31:06,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:31:06,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:31:06,401 INFO L87 Difference]: Start difference. First operand 2971 states and 6096 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:07,950 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-03-10 18:31:08,482 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-03-10 18:31:08,620 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2021-03-10 18:31:08,917 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-03-10 18:31:09,070 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-03-10 18:31:09,233 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2021-03-10 18:31:09,515 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-03-10 18:31:09,684 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:31:09,898 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-03-10 18:31:10,065 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:31:10,211 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2021-03-10 18:31:10,395 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-03-10 18:31:10,623 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2021-03-10 18:31:10,772 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-03-10 18:31:10,953 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-03-10 18:31:11,150 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-03-10 18:31:11,343 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-03-10 18:31:11,590 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-03-10 18:31:11,757 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2021-03-10 18:31:11,967 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-03-10 18:31:12,190 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-03-10 18:31:12,423 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-03-10 18:31:12,666 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2021-03-10 18:31:12,887 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2021-03-10 18:31:13,129 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2021-03-10 18:31:13,349 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-03-10 18:31:13,622 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-03-10 18:31:13,862 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2021-03-10 18:31:14,110 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2021-03-10 18:31:14,335 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2021-03-10 18:31:14,591 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-03-10 18:31:14,926 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2021-03-10 18:31:15,221 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-03-10 18:31:15,459 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-03-10 18:31:15,752 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-03-10 18:31:16,031 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-03-10 18:31:16,300 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 84 [2021-03-10 18:31:16,610 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 86 [2021-03-10 18:31:16,961 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 89 [2021-03-10 18:31:17,255 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-03-10 18:31:17,655 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 88 [2021-03-10 18:31:18,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:31:18,030 INFO L93 Difference]: Finished difference Result 3619 states and 7426 transitions. [2021-03-10 18:31:18,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-03-10 18:31:18,031 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:31:18,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:31:18,036 INFO L225 Difference]: With dead ends: 3619 [2021-03-10 18:31:18,036 INFO L226 Difference]: Without dead ends: 3619 [2021-03-10 18:31:18,037 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 10623.3ms TimeCoverageRelationStatistics Valid=2434, Invalid=5938, Unknown=0, NotChecked=0, Total=8372 [2021-03-10 18:31:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2021-03-10 18:31:18,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 2868. [2021-03-10 18:31:18,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2868 states, 2865 states have (on average 2.0523560209424083) internal successors, (5880), 2867 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:18,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 5880 transitions. [2021-03-10 18:31:18,095 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 5880 transitions. Word has length 82 [2021-03-10 18:31:18,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:31:18,095 INFO L480 AbstractCegarLoop]: Abstraction has 2868 states and 5880 transitions. [2021-03-10 18:31:18,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:18,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 5880 transitions. [2021-03-10 18:31:18,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:31:18,100 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:31:18,100 INFO L519 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] [2021-03-10 18:31:18,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-10 18:31:18,100 INFO L428 AbstractCegarLoop]: === Iteration 15 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:31:18,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:31:18,101 INFO L82 PathProgramCache]: Analyzing trace with hash 985485280, now seen corresponding path program 12 times [2021-03-10 18:31:18,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:31:18,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318016058] [2021-03-10 18:31:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:31:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:31:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:31:18,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318016058] [2021-03-10 18:31:18,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:31:18,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:31:18,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824002020] [2021-03-10 18:31:18,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:31:18,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:31:18,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:31:18,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:31:18,887 INFO L87 Difference]: Start difference. First operand 2868 states and 5880 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:20,454 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2021-03-10 18:31:20,728 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2021-03-10 18:31:21,009 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2021-03-10 18:31:21,166 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2021-03-10 18:31:21,314 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2021-03-10 18:31:21,467 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2021-03-10 18:31:21,630 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 60 [2021-03-10 18:31:21,803 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 60 [2021-03-10 18:31:22,089 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-03-10 18:31:22,267 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-03-10 18:31:22,481 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 66 [2021-03-10 18:31:22,654 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-10 18:31:22,822 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-03-10 18:31:23,025 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2021-03-10 18:31:23,251 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-03-10 18:31:23,408 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2021-03-10 18:31:23,601 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 64 [2021-03-10 18:31:23,810 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2021-03-10 18:31:24,015 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-03-10 18:31:24,214 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-03-10 18:31:24,458 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-03-10 18:31:24,645 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-03-10 18:31:24,867 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 70 [2021-03-10 18:31:25,111 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-03-10 18:31:25,344 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-03-10 18:31:25,592 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-03-10 18:31:25,828 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-03-10 18:31:26,074 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-03-10 18:31:26,312 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-03-10 18:31:26,596 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2021-03-10 18:31:26,842 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2021-03-10 18:31:27,092 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-03-10 18:31:27,331 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2021-03-10 18:31:27,589 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-03-10 18:31:27,819 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-03-10 18:31:28,133 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-03-10 18:31:28,447 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-03-10 18:31:28,696 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-03-10 18:31:29,071 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 82 [2021-03-10 18:31:29,468 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 80 [2021-03-10 18:31:29,826 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-03-10 18:31:30,148 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 88 [2021-03-10 18:31:30,515 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 91 [2021-03-10 18:31:30,865 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2021-03-10 18:31:31,339 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 90 [2021-03-10 18:31:31,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:31:31,635 INFO L93 Difference]: Finished difference Result 3253 states and 6663 transitions. [2021-03-10 18:31:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-03-10 18:31:31,636 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:31:31,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:31:31,641 INFO L225 Difference]: With dead ends: 3253 [2021-03-10 18:31:31,641 INFO L226 Difference]: Without dead ends: 3253 [2021-03-10 18:31:31,642 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 11791.6ms TimeCoverageRelationStatistics Valid=2581, Invalid=6349, Unknown=0, NotChecked=0, Total=8930 [2021-03-10 18:31:31,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2021-03-10 18:31:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 2768. [2021-03-10 18:31:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2765 states have (on average 2.052079566003617) internal successors, (5674), 2767 states have internal predecessors, (5674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 5674 transitions. [2021-03-10 18:31:31,728 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 5674 transitions. Word has length 82 [2021-03-10 18:31:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:31:31,728 INFO L480 AbstractCegarLoop]: Abstraction has 2768 states and 5674 transitions. [2021-03-10 18:31:31,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 5674 transitions. [2021-03-10 18:31:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:31:31,732 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:31:31,733 INFO L519 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] [2021-03-10 18:31:31,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-10 18:31:31,733 INFO L428 AbstractCegarLoop]: === Iteration 16 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:31:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:31:31,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1579024460, now seen corresponding path program 13 times [2021-03-10 18:31:31,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:31:31,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077389897] [2021-03-10 18:31:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:31:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:31:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:31:32,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077389897] [2021-03-10 18:31:32,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:31:32,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:31:32,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556766429] [2021-03-10 18:31:32,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:31:32,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:31:32,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:31:32,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:31:32,433 INFO L87 Difference]: Start difference. First operand 2768 states and 5674 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:33,565 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-10 18:31:33,857 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:31:34,038 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:31:34,224 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:31:34,430 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:31:34,628 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:31:34,791 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:31:34,996 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:31:35,204 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:31:35,392 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:31:35,593 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:31:35,849 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:31:36,089 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:31:36,292 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:31:36,578 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2021-03-10 18:31:36,929 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 83 [2021-03-10 18:31:37,253 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:31:37,494 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:31:37,879 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:31:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:31:39,043 INFO L93 Difference]: Finished difference Result 4804 states and 9851 transitions. [2021-03-10 18:31:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 18:31:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:31:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:31:39,049 INFO L225 Difference]: With dead ends: 4804 [2021-03-10 18:31:39,050 INFO L226 Difference]: Without dead ends: 4804 [2021-03-10 18:31:39,050 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 5719.6ms TimeCoverageRelationStatistics Valid=1212, Invalid=3480, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 18:31:39,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4804 states. [2021-03-10 18:31:39,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4804 to 2898. [2021-03-10 18:31:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 2895 states have (on average 2.0500863557858375) internal successors, (5935), 2897 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 5935 transitions. [2021-03-10 18:31:39,120 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 5935 transitions. Word has length 82 [2021-03-10 18:31:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:31:39,120 INFO L480 AbstractCegarLoop]: Abstraction has 2898 states and 5935 transitions. [2021-03-10 18:31:39,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:39,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 5935 transitions. [2021-03-10 18:31:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:31:39,126 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:31:39,127 INFO L519 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] [2021-03-10 18:31:39,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-10 18:31:39,127 INFO L428 AbstractCegarLoop]: === Iteration 17 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:31:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:31:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash -159179818, now seen corresponding path program 14 times [2021-03-10 18:31:39,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:31:39,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161642388] [2021-03-10 18:31:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:31:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:31:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:31:39,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161642388] [2021-03-10 18:31:39,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:31:39,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:31:39,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146328330] [2021-03-10 18:31:39,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:31:39,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:31:39,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:31:39,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:31:39,879 INFO L87 Difference]: Start difference. First operand 2898 states and 5935 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:40,965 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-10 18:31:41,216 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:31:41,393 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:31:41,581 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:31:41,803 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:31:41,966 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:31:42,160 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:31:42,330 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:31:42,544 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:31:42,804 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:31:43,021 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:31:43,214 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:31:43,419 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:31:43,621 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-10 18:31:43,851 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:31:44,096 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:31:44,300 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:31:44,507 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:31:44,711 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:31:44,935 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-10 18:31:45,218 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-03-10 18:31:45,487 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-03-10 18:31:45,791 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:31:46,044 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:31:46,404 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:31:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:31:47,512 INFO L93 Difference]: Finished difference Result 5065 states and 10398 transitions. [2021-03-10 18:31:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 18:31:47,512 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:31:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:31:47,518 INFO L225 Difference]: With dead ends: 5065 [2021-03-10 18:31:47,518 INFO L226 Difference]: Without dead ends: 5065 [2021-03-10 18:31:47,519 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 6763.0ms TimeCoverageRelationStatistics Valid=1445, Invalid=4105, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 18:31:47,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5065 states. [2021-03-10 18:31:47,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5065 to 2909. [2021-03-10 18:31:47,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2909 states, 2906 states have (on average 2.0502408809359944) internal successors, (5958), 2908 states have internal predecessors, (5958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 5958 transitions. [2021-03-10 18:31:47,613 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 5958 transitions. Word has length 82 [2021-03-10 18:31:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:31:47,614 INFO L480 AbstractCegarLoop]: Abstraction has 2909 states and 5958 transitions. [2021-03-10 18:31:47,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 5958 transitions. [2021-03-10 18:31:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:31:47,618 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:31:47,618 INFO L519 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] [2021-03-10 18:31:47,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-10 18:31:47,618 INFO L428 AbstractCegarLoop]: === Iteration 18 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:31:47,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:31:47,619 INFO L82 PathProgramCache]: Analyzing trace with hash 650178656, now seen corresponding path program 15 times [2021-03-10 18:31:47,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:31:47,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630225482] [2021-03-10 18:31:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:31:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:31:48,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:31:48,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630225482] [2021-03-10 18:31:48,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:31:48,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:31:48,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292997209] [2021-03-10 18:31:48,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:31:48,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:31:48,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:31:48,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:31:48,458 INFO L87 Difference]: Start difference. First operand 2909 states and 5958 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:49,713 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-03-10 18:31:49,862 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2021-03-10 18:31:50,032 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2021-03-10 18:31:50,197 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2021-03-10 18:31:50,352 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-03-10 18:31:50,523 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2021-03-10 18:31:50,681 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-03-10 18:31:50,817 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2021-03-10 18:31:51,005 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2021-03-10 18:31:51,171 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-03-10 18:31:51,381 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-03-10 18:31:51,553 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:31:51,709 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2021-03-10 18:31:51,930 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-03-10 18:31:52,107 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2021-03-10 18:31:52,260 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-03-10 18:31:52,459 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2021-03-10 18:31:52,651 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:31:52,902 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-10 18:31:53,113 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-03-10 18:31:53,294 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2021-03-10 18:31:53,518 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-03-10 18:31:53,747 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-03-10 18:31:53,981 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-03-10 18:31:54,220 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2021-03-10 18:31:54,470 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-03-10 18:31:54,690 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-03-10 18:31:54,967 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-03-10 18:31:55,242 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2021-03-10 18:31:55,489 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-03-10 18:31:55,717 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-03-10 18:31:55,976 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-03-10 18:31:56,315 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2021-03-10 18:31:56,606 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-03-10 18:31:56,858 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-03-10 18:31:57,139 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-03-10 18:31:57,408 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-03-10 18:31:57,656 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:31:57,961 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-03-10 18:31:58,291 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 89 [2021-03-10 18:31:58,583 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-03-10 18:31:58,953 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 88 [2021-03-10 18:31:59,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:31:59,358 INFO L93 Difference]: Finished difference Result 4845 states and 9936 transitions. [2021-03-10 18:31:59,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-03-10 18:31:59,359 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:31:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:31:59,365 INFO L225 Difference]: With dead ends: 4845 [2021-03-10 18:31:59,366 INFO L226 Difference]: Without dead ends: 4845 [2021-03-10 18:31:59,367 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 9989.7ms TimeCoverageRelationStatistics Valid=2068, Invalid=4904, Unknown=0, NotChecked=0, Total=6972 [2021-03-10 18:31:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2021-03-10 18:31:59,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 3136. [2021-03-10 18:31:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3136 states, 3133 states have (on average 2.0510692626875198) internal successors, (6426), 3135 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 6426 transitions. [2021-03-10 18:31:59,434 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 6426 transitions. Word has length 82 [2021-03-10 18:31:59,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:31:59,434 INFO L480 AbstractCegarLoop]: Abstraction has 3136 states and 6426 transitions. [2021-03-10 18:31:59,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:31:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 6426 transitions. [2021-03-10 18:31:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:31:59,439 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:31:59,439 INFO L519 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] [2021-03-10 18:31:59,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-10 18:31:59,439 INFO L428 AbstractCegarLoop]: === Iteration 19 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:31:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:31:59,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1273623482, now seen corresponding path program 16 times [2021-03-10 18:31:59,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:31:59,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110656529] [2021-03-10 18:31:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:31:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:32:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:32:00,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110656529] [2021-03-10 18:32:00,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:32:00,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:32:00,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138132328] [2021-03-10 18:32:00,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:32:00,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:32:00,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:32:00,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:32:00,090 INFO L87 Difference]: Start difference. First operand 3136 states and 6426 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:01,218 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-10 18:32:01,491 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:32:01,766 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:32:01,981 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:32:02,208 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:32:02,390 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:32:02,628 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:32:02,827 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:32:03,059 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:32:03,242 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-10 18:32:03,466 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:32:03,695 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:32:03,929 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-10 18:32:04,139 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:32:04,340 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:32:04,634 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-03-10 18:32:04,926 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-03-10 18:32:05,187 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:32:05,447 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:32:05,879 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:32:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:32:06,885 INFO L93 Difference]: Finished difference Result 5069 states and 10411 transitions. [2021-03-10 18:32:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 18:32:06,885 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:32:06,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:32:06,891 INFO L225 Difference]: With dead ends: 5069 [2021-03-10 18:32:06,891 INFO L226 Difference]: Without dead ends: 5069 [2021-03-10 18:32:06,892 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 5797.5ms TimeCoverageRelationStatistics Valid=1236, Invalid=3594, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 18:32:06,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5069 states. [2021-03-10 18:32:06,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5069 to 3184. [2021-03-10 18:32:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 3181 states have (on average 2.050927381326627) internal successors, (6524), 3183 states have internal predecessors, (6524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 6524 transitions. [2021-03-10 18:32:06,965 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 6524 transitions. Word has length 82 [2021-03-10 18:32:06,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:32:06,966 INFO L480 AbstractCegarLoop]: Abstraction has 3184 states and 6524 transitions. [2021-03-10 18:32:06,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:06,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 6524 transitions. [2021-03-10 18:32:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:32:06,970 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:32:06,970 INFO L519 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] [2021-03-10 18:32:06,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-10 18:32:06,970 INFO L428 AbstractCegarLoop]: === Iteration 20 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:32:06,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:32:06,971 INFO L82 PathProgramCache]: Analyzing trace with hash 2082981956, now seen corresponding path program 17 times [2021-03-10 18:32:06,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:32:06,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802833513] [2021-03-10 18:32:06,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:32:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:32:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:32:07,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802833513] [2021-03-10 18:32:07,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:32:07,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:32:07,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891237314] [2021-03-10 18:32:07,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:32:07,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:32:07,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:32:07,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:32:07,833 INFO L87 Difference]: Start difference. First operand 3184 states and 6524 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:09,007 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-03-10 18:32:09,309 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2021-03-10 18:32:09,475 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 55 [2021-03-10 18:32:09,632 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-03-10 18:32:09,808 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-03-10 18:32:09,973 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-03-10 18:32:10,128 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-03-10 18:32:10,267 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2021-03-10 18:32:10,466 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:32:10,631 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-03-10 18:32:10,837 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-03-10 18:32:11,027 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:32:11,183 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2021-03-10 18:32:11,415 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2021-03-10 18:32:11,604 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-03-10 18:32:11,771 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-03-10 18:32:11,983 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-03-10 18:32:12,188 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-03-10 18:32:12,455 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2021-03-10 18:32:12,674 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-03-10 18:32:12,856 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2021-03-10 18:32:13,080 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-03-10 18:32:13,317 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-03-10 18:32:13,561 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-03-10 18:32:13,804 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2021-03-10 18:32:14,070 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2021-03-10 18:32:14,303 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-03-10 18:32:14,590 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-03-10 18:32:14,838 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-03-10 18:32:15,091 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-03-10 18:32:15,332 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-03-10 18:32:15,599 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-03-10 18:32:15,960 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-03-10 18:32:16,271 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-03-10 18:32:16,527 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 75 [2021-03-10 18:32:16,814 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 80 [2021-03-10 18:32:17,095 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-03-10 18:32:17,362 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 84 [2021-03-10 18:32:17,699 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2021-03-10 18:32:18,051 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 89 [2021-03-10 18:32:18,342 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 83 [2021-03-10 18:32:18,734 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 88 [2021-03-10 18:32:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:32:19,145 INFO L93 Difference]: Finished difference Result 5041 states and 10342 transitions. [2021-03-10 18:32:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-10 18:32:19,146 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:32:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:32:19,153 INFO L225 Difference]: With dead ends: 5041 [2021-03-10 18:32:19,153 INFO L226 Difference]: Without dead ends: 5041 [2021-03-10 18:32:19,154 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 10493.4ms TimeCoverageRelationStatistics Valid=2114, Invalid=5026, Unknown=0, NotChecked=0, Total=7140 [2021-03-10 18:32:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5041 states. [2021-03-10 18:32:19,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5041 to 3142. [2021-03-10 18:32:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3139 states have (on average 2.050971647021344) internal successors, (6438), 3141 states have internal predecessors, (6438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 6438 transitions. [2021-03-10 18:32:19,230 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 6438 transitions. Word has length 82 [2021-03-10 18:32:19,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:32:19,230 INFO L480 AbstractCegarLoop]: Abstraction has 3142 states and 6438 transitions. [2021-03-10 18:32:19,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:19,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 6438 transitions. [2021-03-10 18:32:19,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:32:19,235 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:32:19,235 INFO L519 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] [2021-03-10 18:32:19,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-10 18:32:19,236 INFO L428 AbstractCegarLoop]: === Iteration 21 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:32:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:32:19,236 INFO L82 PathProgramCache]: Analyzing trace with hash -2120983948, now seen corresponding path program 18 times [2021-03-10 18:32:19,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:32:19,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702155081] [2021-03-10 18:32:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:32:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:32:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:32:19,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702155081] [2021-03-10 18:32:19,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:32:19,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:32:19,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669866408] [2021-03-10 18:32:19,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:32:19,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:32:19,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:32:19,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:32:19,936 INFO L87 Difference]: Start difference. First operand 3142 states and 6438 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:21,026 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-10 18:32:21,278 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:32:21,507 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-03-10 18:32:21,809 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-03-10 18:32:22,036 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-03-10 18:32:22,259 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2021-03-10 18:32:22,471 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-03-10 18:32:22,689 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2021-03-10 18:32:22,907 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2021-03-10 18:32:23,107 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-03-10 18:32:23,375 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2021-03-10 18:32:23,647 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:32:23,892 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 82 [2021-03-10 18:32:24,130 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2021-03-10 18:32:24,567 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2021-03-10 18:32:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:32:25,609 INFO L93 Difference]: Finished difference Result 4781 states and 9811 transitions. [2021-03-10 18:32:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:32:25,609 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:32:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:32:25,615 INFO L225 Difference]: With dead ends: 4781 [2021-03-10 18:32:25,615 INFO L226 Difference]: Without dead ends: 4781 [2021-03-10 18:32:25,615 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 4845.2ms TimeCoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:32:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2021-03-10 18:32:25,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 3263. [2021-03-10 18:32:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 3260 states have (on average 2.0530674846625767) internal successors, (6693), 3262 states have internal predecessors, (6693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:25,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 6693 transitions. [2021-03-10 18:32:25,682 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 6693 transitions. Word has length 82 [2021-03-10 18:32:25,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:32:25,682 INFO L480 AbstractCegarLoop]: Abstraction has 3263 states and 6693 transitions. [2021-03-10 18:32:25,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 6693 transitions. [2021-03-10 18:32:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:32:25,687 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:32:25,687 INFO L519 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] [2021-03-10 18:32:25,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-10 18:32:25,687 INFO L428 AbstractCegarLoop]: === Iteration 22 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:32:25,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:32:25,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1311625474, now seen corresponding path program 19 times [2021-03-10 18:32:25,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:32:25,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511555714] [2021-03-10 18:32:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:32:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:32:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:32:26,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511555714] [2021-03-10 18:32:26,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:32:26,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:32:26,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271015144] [2021-03-10 18:32:26,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:32:26,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:32:26,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:32:26,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:32:26,369 INFO L87 Difference]: Start difference. First operand 3263 states and 6693 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:27,453 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-03-10 18:32:27,989 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-03-10 18:32:28,145 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-03-10 18:32:28,291 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-03-10 18:32:28,426 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-03-10 18:32:28,709 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:32:28,858 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-03-10 18:32:29,058 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-03-10 18:32:29,226 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-03-10 18:32:29,382 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:32:29,516 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2021-03-10 18:32:29,715 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2021-03-10 18:32:29,879 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-03-10 18:32:30,023 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-03-10 18:32:30,208 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-03-10 18:32:30,383 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:32:30,631 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2021-03-10 18:32:30,824 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-03-10 18:32:30,983 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2021-03-10 18:32:31,177 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-03-10 18:32:31,381 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-03-10 18:32:31,588 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-03-10 18:32:31,805 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 68 [2021-03-10 18:32:32,027 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-03-10 18:32:32,245 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-03-10 18:32:32,490 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-03-10 18:32:32,706 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-03-10 18:32:32,929 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-03-10 18:32:33,135 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-03-10 18:32:33,366 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2021-03-10 18:32:33,688 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-03-10 18:32:33,952 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-03-10 18:32:34,167 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-03-10 18:32:34,415 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-03-10 18:32:34,663 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2021-03-10 18:32:34,898 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:32:35,189 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-03-10 18:32:35,499 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 89 [2021-03-10 18:32:35,758 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-03-10 18:32:36,109 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 88 [2021-03-10 18:32:36,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:32:36,470 INFO L93 Difference]: Finished difference Result 4831 states and 9922 transitions. [2021-03-10 18:32:36,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-03-10 18:32:36,471 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:32:36,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:32:36,475 INFO L225 Difference]: With dead ends: 4831 [2021-03-10 18:32:36,475 INFO L226 Difference]: Without dead ends: 4831 [2021-03-10 18:32:36,476 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 9245.2ms TimeCoverageRelationStatistics Valid=2156, Invalid=5154, Unknown=0, NotChecked=0, Total=7310 [2021-03-10 18:32:36,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4831 states. [2021-03-10 18:32:36,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4831 to 3160. [2021-03-10 18:32:36,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3160 states, 3157 states have (on average 2.0516312955337344) internal successors, (6477), 3159 states have internal predecessors, (6477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 6477 transitions. [2021-03-10 18:32:36,514 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 6477 transitions. Word has length 82 [2021-03-10 18:32:36,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:32:36,514 INFO L480 AbstractCegarLoop]: Abstraction has 3160 states and 6477 transitions. [2021-03-10 18:32:36,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:36,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 6477 transitions. [2021-03-10 18:32:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:32:36,518 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:32:36,518 INFO L519 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] [2021-03-10 18:32:36,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-10 18:32:36,518 INFO L428 AbstractCegarLoop]: === Iteration 23 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:32:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:32:36,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1969118328, now seen corresponding path program 20 times [2021-03-10 18:32:36,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:32:36,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91400804] [2021-03-10 18:32:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:32:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:32:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:32:37,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91400804] [2021-03-10 18:32:37,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:32:37,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:32:37,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204387440] [2021-03-10 18:32:37,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:32:37,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:32:37,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:32:37,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:32:37,284 INFO L87 Difference]: Start difference. First operand 3160 states and 6477 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:38,836 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2021-03-10 18:32:39,360 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2021-03-10 18:32:39,498 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2021-03-10 18:32:39,781 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2021-03-10 18:32:39,934 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 60 [2021-03-10 18:32:40,098 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2021-03-10 18:32:40,231 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-03-10 18:32:40,377 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-03-10 18:32:40,540 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-03-10 18:32:40,738 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 66 [2021-03-10 18:32:40,898 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-10 18:32:41,038 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-03-10 18:32:41,223 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2021-03-10 18:32:41,435 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-03-10 18:32:41,582 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2021-03-10 18:32:41,773 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2021-03-10 18:32:41,967 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2021-03-10 18:32:42,162 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2021-03-10 18:32:42,351 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-03-10 18:32:42,579 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-03-10 18:32:42,740 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-03-10 18:32:42,950 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2021-03-10 18:32:43,164 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-03-10 18:32:43,390 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-03-10 18:32:43,621 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2021-03-10 18:32:43,842 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 68 [2021-03-10 18:32:44,073 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2021-03-10 18:32:44,291 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 72 [2021-03-10 18:32:44,554 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-03-10 18:32:44,802 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-03-10 18:32:45,033 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-03-10 18:32:45,255 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2021-03-10 18:32:45,493 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-03-10 18:32:45,705 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2021-03-10 18:32:45,991 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-03-10 18:32:46,279 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 78 [2021-03-10 18:32:46,517 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2021-03-10 18:32:46,780 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2021-03-10 18:32:47,048 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 80 [2021-03-10 18:32:47,294 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2021-03-10 18:32:47,591 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 88 [2021-03-10 18:32:47,936 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 91 [2021-03-10 18:32:48,246 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 85 [2021-03-10 18:32:48,660 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 90 [2021-03-10 18:32:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:32:48,921 INFO L93 Difference]: Finished difference Result 3929 states and 8051 transitions. [2021-03-10 18:32:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-03-10 18:32:48,922 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:32:48,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:32:48,925 INFO L225 Difference]: With dead ends: 3929 [2021-03-10 18:32:48,925 INFO L226 Difference]: Without dead ends: 3929 [2021-03-10 18:32:48,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 10912.5ms TimeCoverageRelationStatistics Valid=2641, Invalid=6479, Unknown=0, NotChecked=0, Total=9120 [2021-03-10 18:32:48,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2021-03-10 18:32:48,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 2786. [2021-03-10 18:32:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2783 states have (on average 2.0517427236794825) internal successors, (5710), 2785 states have internal predecessors, (5710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 5710 transitions. [2021-03-10 18:32:48,952 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 5710 transitions. Word has length 82 [2021-03-10 18:32:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:32:48,952 INFO L480 AbstractCegarLoop]: Abstraction has 2786 states and 5710 transitions. [2021-03-10 18:32:48,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:48,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 5710 transitions. [2021-03-10 18:32:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:32:48,955 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:32:48,955 INFO L519 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] [2021-03-10 18:32:48,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-10 18:32:48,955 INFO L428 AbstractCegarLoop]: === Iteration 24 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:32:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:32:48,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1222376686, now seen corresponding path program 21 times [2021-03-10 18:32:48,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:32:48,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134973294] [2021-03-10 18:32:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:32:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:32:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:32:49,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134973294] [2021-03-10 18:32:49,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:32:49,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:32:49,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255570802] [2021-03-10 18:32:49,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:32:49,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:32:49,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:32:49,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:32:49,583 INFO L87 Difference]: Start difference. First operand 2786 states and 5710 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:50,804 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:32:50,962 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:32:51,128 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:32:51,316 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:32:51,500 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:32:51,647 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:32:51,830 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:32:52,014 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:32:52,183 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:32:52,364 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:32:52,565 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:32:52,787 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:32:52,970 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:32:53,193 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2021-03-10 18:32:53,427 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 83 [2021-03-10 18:32:53,694 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:32:53,917 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:32:54,244 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:32:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:32:55,333 INFO L93 Difference]: Finished difference Result 4700 states and 9643 transitions. [2021-03-10 18:32:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 18:32:55,333 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:32:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:32:55,337 INFO L225 Difference]: With dead ends: 4700 [2021-03-10 18:32:55,338 INFO L226 Difference]: Without dead ends: 4700 [2021-03-10 18:32:55,338 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 5052.7ms TimeCoverageRelationStatistics Valid=1212, Invalid=3480, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 18:32:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4700 states. [2021-03-10 18:32:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4700 to 2865. [2021-03-10 18:32:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2862 states have (on average 2.0506638714185885) internal successors, (5869), 2864 states have internal predecessors, (5869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:55,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5869 transitions. [2021-03-10 18:32:55,371 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5869 transitions. Word has length 82 [2021-03-10 18:32:55,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:32:55,371 INFO L480 AbstractCegarLoop]: Abstraction has 2865 states and 5869 transitions. [2021-03-10 18:32:55,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:55,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5869 transitions. [2021-03-10 18:32:55,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:32:55,374 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:32:55,374 INFO L519 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] [2021-03-10 18:32:55,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-10 18:32:55,375 INFO L428 AbstractCegarLoop]: === Iteration 25 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:32:55,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:32:55,375 INFO L82 PathProgramCache]: Analyzing trace with hash 197467956, now seen corresponding path program 22 times [2021-03-10 18:32:55,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:32:55,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075227076] [2021-03-10 18:32:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:32:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:32:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:32:56,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075227076] [2021-03-10 18:32:56,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:32:56,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:32:56,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294834038] [2021-03-10 18:32:56,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:32:56,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:32:56,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:32:56,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:32:56,036 INFO L87 Difference]: Start difference. First operand 2865 states and 5869 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:32:57,247 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:32:57,412 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:32:57,578 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:32:57,763 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:32:57,907 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:32:58,074 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:32:58,226 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:32:58,415 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:32:58,584 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:32:58,763 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:32:58,944 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:32:59,123 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:32:59,293 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-10 18:32:59,483 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:32:59,700 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:32:59,890 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:33:00,073 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:33:00,252 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:33:00,452 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-10 18:33:00,707 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-03-10 18:33:00,952 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-03-10 18:33:01,204 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:33:01,420 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:33:01,734 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:33:02,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:33:02,654 INFO L93 Difference]: Finished difference Result 4961 states and 10190 transitions. [2021-03-10 18:33:02,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 18:33:02,656 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:33:02,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:33:02,661 INFO L225 Difference]: With dead ends: 4961 [2021-03-10 18:33:02,661 INFO L226 Difference]: Without dead ends: 4961 [2021-03-10 18:33:02,662 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 5976.8ms TimeCoverageRelationStatistics Valid=1445, Invalid=4105, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 18:33:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4961 states. [2021-03-10 18:33:02,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4961 to 2876. [2021-03-10 18:33:02,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2873 states have (on average 2.050817960320223) internal successors, (5892), 2875 states have internal predecessors, (5892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 5892 transitions. [2021-03-10 18:33:02,694 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 5892 transitions. Word has length 82 [2021-03-10 18:33:02,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:33:02,694 INFO L480 AbstractCegarLoop]: Abstraction has 2876 states and 5892 transitions. [2021-03-10 18:33:02,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:02,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 5892 transitions. [2021-03-10 18:33:02,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:33:02,697 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:33:02,697 INFO L519 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] [2021-03-10 18:33:02,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-10 18:33:02,697 INFO L428 AbstractCegarLoop]: === Iteration 26 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:33:02,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:33:02,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1006826430, now seen corresponding path program 23 times [2021-03-10 18:33:02,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:33:02,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294973839] [2021-03-10 18:33:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:33:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:33:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:33:03,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294973839] [2021-03-10 18:33:03,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:33:03,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:33:03,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56580664] [2021-03-10 18:33:03,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:33:03,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:33:03,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:33:03,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:33:03,364 INFO L87 Difference]: Start difference. First operand 2876 states and 5892 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:04,672 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:33:04,808 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2021-03-10 18:33:04,979 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2021-03-10 18:33:05,119 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2021-03-10 18:33:05,293 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2021-03-10 18:33:05,445 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2021-03-10 18:33:05,643 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-03-10 18:33:05,802 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2021-03-10 18:33:05,937 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2021-03-10 18:33:06,111 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:33:06,283 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:33:06,505 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2021-03-10 18:33:06,693 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-03-10 18:33:06,848 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2021-03-10 18:33:07,037 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:33:07,233 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-03-10 18:33:07,435 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2021-03-10 18:33:07,633 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-03-10 18:33:07,845 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2021-03-10 18:33:08,041 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 72 [2021-03-10 18:33:08,278 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-03-10 18:33:08,487 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-03-10 18:33:08,696 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2021-03-10 18:33:08,904 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2021-03-10 18:33:09,127 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-03-10 18:33:09,419 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2021-03-10 18:33:09,677 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-03-10 18:33:09,889 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2021-03-10 18:33:10,144 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-03-10 18:33:10,391 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 80 [2021-03-10 18:33:10,624 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 84 [2021-03-10 18:33:10,909 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 86 [2021-03-10 18:33:11,218 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 89 [2021-03-10 18:33:11,475 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-03-10 18:33:11,822 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 88 [2021-03-10 18:33:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:33:12,226 INFO L93 Difference]: Finished difference Result 4725 states and 9696 transitions. [2021-03-10 18:33:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-03-10 18:33:12,227 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:33:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:33:12,231 INFO L225 Difference]: With dead ends: 4725 [2021-03-10 18:33:12,231 INFO L226 Difference]: Without dead ends: 4725 [2021-03-10 18:33:12,231 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 8019.2ms TimeCoverageRelationStatistics Valid=1796, Invalid=4210, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 18:33:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4725 states. [2021-03-10 18:33:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4725 to 3097. [2021-03-10 18:33:12,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 3094 states have (on average 2.0517129928894633) internal successors, (6348), 3096 states have internal predecessors, (6348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 6348 transitions. [2021-03-10 18:33:12,265 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 6348 transitions. Word has length 82 [2021-03-10 18:33:12,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:33:12,265 INFO L480 AbstractCegarLoop]: Abstraction has 3097 states and 6348 transitions. [2021-03-10 18:33:12,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:12,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 6348 transitions. [2021-03-10 18:33:12,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:33:12,268 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:33:12,268 INFO L519 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] [2021-03-10 18:33:12,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-10 18:33:12,269 INFO L428 AbstractCegarLoop]: === Iteration 27 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:33:12,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:33:12,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1630271256, now seen corresponding path program 24 times [2021-03-10 18:33:12,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:33:12,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270028583] [2021-03-10 18:33:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:33:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:33:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:33:12,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270028583] [2021-03-10 18:33:12,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:33:12,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:33:12,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865003764] [2021-03-10 18:33:12,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:33:12,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:33:12,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:33:12,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:33:12,989 INFO L87 Difference]: Start difference. First operand 3097 states and 6348 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:14,376 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:33:14,557 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:33:14,746 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:33:14,921 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:33:15,114 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:33:15,285 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:33:15,474 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:33:15,628 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-10 18:33:15,816 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:33:16,016 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:33:16,217 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-10 18:33:16,395 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:33:16,569 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:33:16,806 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-03-10 18:33:17,054 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-03-10 18:33:17,276 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:33:17,497 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:33:17,878 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:33:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:33:18,731 INFO L93 Difference]: Finished difference Result 4959 states and 10191 transitions. [2021-03-10 18:33:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 18:33:18,732 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:33:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:33:18,736 INFO L225 Difference]: With dead ends: 4959 [2021-03-10 18:33:18,737 INFO L226 Difference]: Without dead ends: 4959 [2021-03-10 18:33:18,737 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 5190.4ms TimeCoverageRelationStatistics Valid=1236, Invalid=3594, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 18:33:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4959 states. [2021-03-10 18:33:18,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4959 to 3145. [2021-03-10 18:33:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 3142 states have (on average 2.0515595162316997) internal successors, (6446), 3144 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 6446 transitions. [2021-03-10 18:33:18,774 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 6446 transitions. Word has length 82 [2021-03-10 18:33:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:33:18,774 INFO L480 AbstractCegarLoop]: Abstraction has 3145 states and 6446 transitions. [2021-03-10 18:33:18,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 6446 transitions. [2021-03-10 18:33:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:33:18,777 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:33:18,777 INFO L519 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] [2021-03-10 18:33:18,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-10 18:33:18,777 INFO L428 AbstractCegarLoop]: === Iteration 28 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:33:18,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:33:18,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1855337566, now seen corresponding path program 25 times [2021-03-10 18:33:18,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:33:18,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75538492] [2021-03-10 18:33:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:33:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:33:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:33:19,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75538492] [2021-03-10 18:33:19,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:33:19,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:33:19,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232386416] [2021-03-10 18:33:19,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:33:19,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:33:19,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:33:19,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:33:19,505 INFO L87 Difference]: Start difference. First operand 3145 states and 6446 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:20,432 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2021-03-10 18:33:20,767 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2021-03-10 18:33:20,910 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2021-03-10 18:33:21,042 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2021-03-10 18:33:21,214 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2021-03-10 18:33:21,357 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2021-03-10 18:33:21,526 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2021-03-10 18:33:21,683 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2021-03-10 18:33:21,876 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:33:22,038 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2021-03-10 18:33:22,176 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2021-03-10 18:33:22,350 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 64 [2021-03-10 18:33:22,525 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:33:22,748 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-10 18:33:22,939 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-03-10 18:33:23,099 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2021-03-10 18:33:23,283 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 69 [2021-03-10 18:33:23,485 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-03-10 18:33:23,690 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-03-10 18:33:23,891 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2021-03-10 18:33:24,109 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-03-10 18:33:24,309 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-03-10 18:33:24,552 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-03-10 18:33:24,768 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2021-03-10 18:33:24,990 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-03-10 18:33:25,195 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-03-10 18:33:25,425 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-03-10 18:33:25,717 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2021-03-10 18:33:25,978 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-03-10 18:33:26,195 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-03-10 18:33:26,446 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-03-10 18:33:26,692 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-03-10 18:33:26,942 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:33:27,222 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-03-10 18:33:27,533 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 89 [2021-03-10 18:33:27,791 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-03-10 18:33:28,143 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 88 [2021-03-10 18:33:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:33:28,523 INFO L93 Difference]: Finished difference Result 4921 states and 10102 transitions. [2021-03-10 18:33:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-10 18:33:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:33:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:33:28,528 INFO L225 Difference]: With dead ends: 4921 [2021-03-10 18:33:28,528 INFO L226 Difference]: Without dead ends: 4921 [2021-03-10 18:33:28,528 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 8388.3ms TimeCoverageRelationStatistics Valid=1842, Invalid=4320, Unknown=0, NotChecked=0, Total=6162 [2021-03-10 18:33:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4921 states. [2021-03-10 18:33:28,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4921 to 3103. [2021-03-10 18:33:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3103 states, 3100 states have (on average 2.0516129032258066) internal successors, (6360), 3102 states have internal predecessors, (6360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 6360 transitions. [2021-03-10 18:33:28,561 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 6360 transitions. Word has length 82 [2021-03-10 18:33:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:33:28,561 INFO L480 AbstractCegarLoop]: Abstraction has 3103 states and 6360 transitions. [2021-03-10 18:33:28,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 6360 transitions. [2021-03-10 18:33:28,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:33:28,563 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:33:28,563 INFO L519 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] [2021-03-10 18:33:28,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-10 18:33:28,563 INFO L428 AbstractCegarLoop]: === Iteration 29 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:33:28,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:33:28,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1764336174, now seen corresponding path program 26 times [2021-03-10 18:33:28,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:33:28,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916151017] [2021-03-10 18:33:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:33:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:33:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:33:29,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916151017] [2021-03-10 18:33:29,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:33:29,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:33:29,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852092212] [2021-03-10 18:33:29,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:33:29,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:33:29,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:33:29,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:33:29,208 INFO L87 Difference]: Start difference. First operand 3103 states and 6360 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:30,342 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:33:30,532 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-03-10 18:33:30,777 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-03-10 18:33:30,986 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-03-10 18:33:31,170 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2021-03-10 18:33:31,353 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-03-10 18:33:31,542 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2021-03-10 18:33:31,731 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2021-03-10 18:33:31,904 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-03-10 18:33:32,133 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2021-03-10 18:33:32,357 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:33:32,566 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 82 [2021-03-10 18:33:32,770 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2021-03-10 18:33:33,149 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2021-03-10 18:33:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:33:33,987 INFO L93 Difference]: Finished difference Result 4671 states and 9591 transitions. [2021-03-10 18:33:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:33:33,988 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:33:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:33:33,992 INFO L225 Difference]: With dead ends: 4671 [2021-03-10 18:33:33,992 INFO L226 Difference]: Without dead ends: 4671 [2021-03-10 18:33:33,992 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 4294.4ms TimeCoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:33:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2021-03-10 18:33:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 3224. [2021-03-10 18:33:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 3221 states have (on average 2.053710027941633) internal successors, (6615), 3223 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 6615 transitions. [2021-03-10 18:33:34,025 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 6615 transitions. Word has length 82 [2021-03-10 18:33:34,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:33:34,026 INFO L480 AbstractCegarLoop]: Abstraction has 3224 states and 6615 transitions. [2021-03-10 18:33:34,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 6615 transitions. [2021-03-10 18:33:34,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:33:34,029 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:33:34,029 INFO L519 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] [2021-03-10 18:33:34,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-10 18:33:34,029 INFO L428 AbstractCegarLoop]: === Iteration 30 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:33:34,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:33:34,030 INFO L82 PathProgramCache]: Analyzing trace with hash -954977700, now seen corresponding path program 27 times [2021-03-10 18:33:34,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:33:34,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600502851] [2021-03-10 18:33:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:33:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:33:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:33:34,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600502851] [2021-03-10 18:33:34,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:33:34,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:33:34,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671813832] [2021-03-10 18:33:34,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:33:34,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:33:34,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:33:34,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:33:34,665 INFO L87 Difference]: Start difference. First operand 3224 states and 6615 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:35,624 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2021-03-10 18:33:35,956 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2021-03-10 18:33:36,099 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2021-03-10 18:33:36,231 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2021-03-10 18:33:36,389 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2021-03-10 18:33:36,532 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2021-03-10 18:33:36,702 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2021-03-10 18:33:36,867 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-03-10 18:33:37,018 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2021-03-10 18:33:37,221 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:33:37,386 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-03-10 18:33:37,527 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2021-03-10 18:33:37,703 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 64 [2021-03-10 18:33:37,874 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-03-10 18:33:38,098 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-03-10 18:33:38,290 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-03-10 18:33:38,446 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2021-03-10 18:33:38,632 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 69 [2021-03-10 18:33:38,831 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-03-10 18:33:39,036 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2021-03-10 18:33:39,244 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2021-03-10 18:33:39,461 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2021-03-10 18:33:39,659 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-03-10 18:33:39,899 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-03-10 18:33:40,114 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2021-03-10 18:33:40,327 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2021-03-10 18:33:40,530 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2021-03-10 18:33:40,758 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-03-10 18:33:41,060 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2021-03-10 18:33:41,318 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-03-10 18:33:41,532 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-03-10 18:33:41,781 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-03-10 18:33:42,026 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-03-10 18:33:42,257 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 84 [2021-03-10 18:33:42,533 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 86 [2021-03-10 18:33:42,838 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 89 [2021-03-10 18:33:43,103 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-03-10 18:33:43,451 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 88 [2021-03-10 18:33:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:33:43,825 INFO L93 Difference]: Finished difference Result 4711 states and 9682 transitions. [2021-03-10 18:33:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-10 18:33:43,825 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:33:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:33:43,829 INFO L225 Difference]: With dead ends: 4711 [2021-03-10 18:33:43,829 INFO L226 Difference]: Without dead ends: 4711 [2021-03-10 18:33:43,830 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 8380.4ms TimeCoverageRelationStatistics Valid=1884, Invalid=4436, Unknown=0, NotChecked=0, Total=6320 [2021-03-10 18:33:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-03-10 18:33:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 3121. [2021-03-10 18:33:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 3118 states have (on average 2.0522771007055804) internal successors, (6399), 3120 states have internal predecessors, (6399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 6399 transitions. [2021-03-10 18:33:43,861 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 6399 transitions. Word has length 82 [2021-03-10 18:33:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:33:43,861 INFO L480 AbstractCegarLoop]: Abstraction has 3121 states and 6399 transitions. [2021-03-10 18:33:43,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:43,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 6399 transitions. [2021-03-10 18:33:43,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:33:43,864 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:33:43,864 INFO L519 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] [2021-03-10 18:33:43,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-10 18:33:43,865 INFO L428 AbstractCegarLoop]: === Iteration 31 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:33:43,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:33:43,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1969201194, now seen corresponding path program 28 times [2021-03-10 18:33:43,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:33:43,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963588623] [2021-03-10 18:33:43,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:33:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:33:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:33:44,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963588623] [2021-03-10 18:33:44,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:33:44,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:33:44,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499476066] [2021-03-10 18:33:44,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:33:44,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:33:44,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:33:44,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:33:44,643 INFO L87 Difference]: Start difference. First operand 3121 states and 6399 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:46,280 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2021-03-10 18:33:46,811 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-03-10 18:33:46,947 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2021-03-10 18:33:47,102 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-10 18:33:47,240 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2021-03-10 18:33:47,389 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-03-10 18:33:47,550 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-03-10 18:33:47,826 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2021-03-10 18:33:47,987 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2021-03-10 18:33:48,184 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-03-10 18:33:48,342 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-03-10 18:33:48,487 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-10 18:33:48,668 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2021-03-10 18:33:48,875 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2021-03-10 18:33:49,036 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2021-03-10 18:33:49,218 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2021-03-10 18:33:49,408 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 63 [2021-03-10 18:33:49,601 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-03-10 18:33:49,786 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:33:50,016 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-03-10 18:33:50,176 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:33:50,387 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 70 [2021-03-10 18:33:50,598 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2021-03-10 18:33:50,813 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-03-10 18:33:51,054 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2021-03-10 18:33:51,275 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 67 [2021-03-10 18:33:51,504 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2021-03-10 18:33:51,718 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-03-10 18:33:51,980 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-03-10 18:33:52,207 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-03-10 18:33:52,439 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-03-10 18:33:52,662 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-03-10 18:33:52,909 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-03-10 18:33:53,121 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-03-10 18:33:53,410 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2021-03-10 18:33:53,704 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-03-10 18:33:53,934 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-03-10 18:33:54,204 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-03-10 18:33:54,478 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2021-03-10 18:33:54,735 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 86 [2021-03-10 18:33:55,033 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 88 [2021-03-10 18:33:55,358 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 91 [2021-03-10 18:33:55,672 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 85 [2021-03-10 18:33:56,087 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 90 [2021-03-10 18:33:56,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:33:56,348 INFO L93 Difference]: Finished difference Result 3869 states and 7931 transitions. [2021-03-10 18:33:56,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-03-10 18:33:56,349 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:33:56,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:33:56,352 INFO L225 Difference]: With dead ends: 3869 [2021-03-10 18:33:56,352 INFO L226 Difference]: Without dead ends: 3869 [2021-03-10 18:33:56,353 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 10943.7ms TimeCoverageRelationStatistics Valid=2698, Invalid=6614, Unknown=0, NotChecked=0, Total=9312 [2021-03-10 18:33:56,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2021-03-10 18:33:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 2792. [2021-03-10 18:33:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 2789 states have (on average 2.0516314091072068) internal successors, (5722), 2791 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 5722 transitions. [2021-03-10 18:33:56,378 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 5722 transitions. Word has length 82 [2021-03-10 18:33:56,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:33:56,378 INFO L480 AbstractCegarLoop]: Abstraction has 2792 states and 5722 transitions. [2021-03-10 18:33:56,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 5722 transitions. [2021-03-10 18:33:56,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:33:56,381 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:33:56,381 INFO L519 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] [2021-03-10 18:33:56,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-10 18:33:56,381 INFO L428 AbstractCegarLoop]: === Iteration 32 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:33:56,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:33:56,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1163087026, now seen corresponding path program 29 times [2021-03-10 18:33:56,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:33:56,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155015373] [2021-03-10 18:33:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:33:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:33:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:33:57,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155015373] [2021-03-10 18:33:57,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:33:57,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:33:57,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783971014] [2021-03-10 18:33:57,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:33:57,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:33:57,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:33:57,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:33:57,067 INFO L87 Difference]: Start difference. First operand 2792 states and 5722 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:33:58,199 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:33:58,354 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:33:58,516 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:33:58,696 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:33:58,865 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:33:59,022 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:33:59,200 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:33:59,379 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:33:59,548 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:33:59,727 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:33:59,932 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:34:00,146 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:34:00,332 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:34:00,539 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2021-03-10 18:34:00,772 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 83 [2021-03-10 18:34:01,044 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:34:01,257 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:34:01,584 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:34:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:34:02,588 INFO L93 Difference]: Finished difference Result 3984 states and 8165 transitions. [2021-03-10 18:34:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 18:34:02,589 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:34:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:34:02,593 INFO L225 Difference]: With dead ends: 3984 [2021-03-10 18:34:02,593 INFO L226 Difference]: Without dead ends: 3984 [2021-03-10 18:34:02,593 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 5120.6ms TimeCoverageRelationStatistics Valid=1212, Invalid=3480, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 18:34:02,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-03-10 18:34:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 2858. [2021-03-10 18:34:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 2855 states have (on average 2.050788091068301) internal successors, (5855), 2857 states have internal predecessors, (5855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 5855 transitions. [2021-03-10 18:34:02,622 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 5855 transitions. Word has length 82 [2021-03-10 18:34:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:34:02,622 INFO L480 AbstractCegarLoop]: Abstraction has 2858 states and 5855 transitions. [2021-03-10 18:34:02,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 5855 transitions. [2021-03-10 18:34:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:34:02,625 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:34:02,625 INFO L519 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] [2021-03-10 18:34:02,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-10 18:34:02,625 INFO L428 AbstractCegarLoop]: === Iteration 33 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:34:02,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:34:02,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1712035628, now seen corresponding path program 30 times [2021-03-10 18:34:02,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:34:02,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145989942] [2021-03-10 18:34:02,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:34:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:34:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:34:03,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145989942] [2021-03-10 18:34:03,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:34:03,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:34:03,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625004255] [2021-03-10 18:34:03,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:34:03,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:34:03,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:34:03,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:34:03,238 INFO L87 Difference]: Start difference. First operand 2858 states and 5855 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:04,469 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-10 18:34:04,637 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:34:04,808 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:34:05,000 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:34:05,147 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:34:05,334 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-10 18:34:05,487 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:34:05,683 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:34:05,857 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:34:06,039 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-10 18:34:06,214 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:34:06,400 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:34:06,573 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-10 18:34:06,766 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:34:06,987 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:34:07,181 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:34:07,377 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:34:07,561 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:34:07,763 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-10 18:34:08,011 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-03-10 18:34:08,246 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-03-10 18:34:08,510 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:34:08,734 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:34:09,059 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:34:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:34:10,056 INFO L93 Difference]: Finished difference Result 4245 states and 8712 transitions. [2021-03-10 18:34:10,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 18:34:10,057 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:34:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:34:10,061 INFO L225 Difference]: With dead ends: 4245 [2021-03-10 18:34:10,061 INFO L226 Difference]: Without dead ends: 4245 [2021-03-10 18:34:10,061 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 6019.5ms TimeCoverageRelationStatistics Valid=1445, Invalid=4105, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 18:34:10,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4245 states. [2021-03-10 18:34:10,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4245 to 2869. [2021-03-10 18:34:10,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2866 states have (on average 2.0509420795533844) internal successors, (5878), 2868 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 5878 transitions. [2021-03-10 18:34:10,089 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 5878 transitions. Word has length 82 [2021-03-10 18:34:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:34:10,089 INFO L480 AbstractCegarLoop]: Abstraction has 2869 states and 5878 transitions. [2021-03-10 18:34:10,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 5878 transitions. [2021-03-10 18:34:10,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:34:10,091 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:34:10,091 INFO L519 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] [2021-03-10 18:34:10,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-10 18:34:10,091 INFO L428 AbstractCegarLoop]: === Iteration 34 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:34:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:34:10,092 INFO L82 PathProgramCache]: Analyzing trace with hash -902677154, now seen corresponding path program 31 times [2021-03-10 18:34:10,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:34:10,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152376705] [2021-03-10 18:34:10,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:34:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:34:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:34:10,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152376705] [2021-03-10 18:34:10,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:34:10,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:34:10,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556702814] [2021-03-10 18:34:10,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:34:10,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:34:10,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:34:10,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:34:10,690 INFO L87 Difference]: Start difference. First operand 2869 states and 5878 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:11,811 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2021-03-10 18:34:11,973 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:34:12,146 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-03-10 18:34:12,338 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2021-03-10 18:34:12,493 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:34:12,662 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2021-03-10 18:34:12,828 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-03-10 18:34:13,035 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-03-10 18:34:13,220 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:34:13,399 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2021-03-10 18:34:13,602 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-03-10 18:34:13,800 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:34:13,981 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2021-03-10 18:34:14,188 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-03-10 18:34:14,468 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:34:14,702 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-03-10 18:34:14,910 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-03-10 18:34:15,111 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:34:15,309 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-10 18:34:15,547 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-03-10 18:34:15,817 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-03-10 18:34:16,064 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2021-03-10 18:34:16,273 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2021-03-10 18:34:16,513 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-03-10 18:34:16,751 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-03-10 18:34:16,981 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2021-03-10 18:34:17,254 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2021-03-10 18:34:17,564 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2021-03-10 18:34:17,816 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-03-10 18:34:18,161 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2021-03-10 18:34:18,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:34:18,563 INFO L93 Difference]: Finished difference Result 4217 states and 8648 transitions. [2021-03-10 18:34:18,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 18:34:18,563 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:34:18,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:34:18,567 INFO L225 Difference]: With dead ends: 4217 [2021-03-10 18:34:18,567 INFO L226 Difference]: Without dead ends: 4217 [2021-03-10 18:34:18,568 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 7214.9ms TimeCoverageRelationStatistics Valid=1529, Invalid=3583, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 18:34:18,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4217 states. [2021-03-10 18:34:18,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4217 to 3072. [2021-03-10 18:34:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3069 states have (on average 2.0514825676116) internal successors, (6296), 3071 states have internal predecessors, (6296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 6296 transitions. [2021-03-10 18:34:18,596 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 6296 transitions. Word has length 82 [2021-03-10 18:34:18,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:34:18,596 INFO L480 AbstractCegarLoop]: Abstraction has 3072 states and 6296 transitions. [2021-03-10 18:34:18,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:18,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 6296 transitions. [2021-03-10 18:34:18,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:34:18,598 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:34:18,598 INFO L519 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] [2021-03-10 18:34:18,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-10 18:34:18,599 INFO L428 AbstractCegarLoop]: === Iteration 35 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:34:18,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:34:18,599 INFO L82 PathProgramCache]: Analyzing trace with hash -279232328, now seen corresponding path program 32 times [2021-03-10 18:34:18,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:34:18,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075958541] [2021-03-10 18:34:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:34:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:34:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:34:19,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075958541] [2021-03-10 18:34:19,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:34:19,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:34:19,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153776053] [2021-03-10 18:34:19,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:34:19,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:34:19,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:34:19,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:34:19,301 INFO L87 Difference]: Start difference. First operand 3072 states and 6296 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:20,555 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:34:20,795 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:34:20,983 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:34:21,180 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:34:21,338 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:34:21,538 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:34:21,713 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:34:21,924 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:34:22,081 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-10 18:34:22,273 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:34:22,475 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:34:22,680 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-10 18:34:22,860 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:34:23,035 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:34:23,274 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-03-10 18:34:23,522 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-03-10 18:34:23,759 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:34:23,989 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:34:24,384 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:34:25,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:34:25,320 INFO L93 Difference]: Finished difference Result 4825 states and 9921 transitions. [2021-03-10 18:34:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 18:34:25,320 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:34:25,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:34:25,324 INFO L225 Difference]: With dead ends: 4825 [2021-03-10 18:34:25,324 INFO L226 Difference]: Without dead ends: 4825 [2021-03-10 18:34:25,324 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 5285.5ms TimeCoverageRelationStatistics Valid=1236, Invalid=3594, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 18:34:25,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2021-03-10 18:34:25,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 3120. [2021-03-10 18:34:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 3117 states have (on average 2.051331408405518) internal successors, (6394), 3119 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 6394 transitions. [2021-03-10 18:34:25,358 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 6394 transitions. Word has length 82 [2021-03-10 18:34:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:34:25,358 INFO L480 AbstractCegarLoop]: Abstraction has 3120 states and 6394 transitions. [2021-03-10 18:34:25,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 6394 transitions. [2021-03-10 18:34:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:34:25,360 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:34:25,360 INFO L519 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] [2021-03-10 18:34:25,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-10 18:34:25,361 INFO L428 AbstractCegarLoop]: === Iteration 36 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:34:25,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:34:25,361 INFO L82 PathProgramCache]: Analyzing trace with hash 530126146, now seen corresponding path program 33 times [2021-03-10 18:34:25,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:34:25,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963298548] [2021-03-10 18:34:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:34:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:34:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:34:25,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963298548] [2021-03-10 18:34:25,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:34:25,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:34:25,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630794446] [2021-03-10 18:34:25,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:34:25,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:34:25,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:34:25,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:34:25,967 INFO L87 Difference]: Start difference. First operand 3120 states and 6394 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:27,194 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2021-03-10 18:34:27,341 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2021-03-10 18:34:27,508 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-10 18:34:27,688 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-03-10 18:34:27,891 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-03-10 18:34:28,071 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2021-03-10 18:34:28,251 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-03-10 18:34:28,425 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:34:28,645 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2021-03-10 18:34:28,836 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-03-10 18:34:29,025 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-03-10 18:34:29,222 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-03-10 18:34:29,428 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2021-03-10 18:34:29,624 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-03-10 18:34:29,840 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2021-03-10 18:34:30,047 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 72 [2021-03-10 18:34:30,288 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-03-10 18:34:30,502 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-03-10 18:34:30,713 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2021-03-10 18:34:30,916 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2021-03-10 18:34:31,143 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-03-10 18:34:31,430 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2021-03-10 18:34:31,690 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-03-10 18:34:31,914 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2021-03-10 18:34:32,167 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-03-10 18:34:32,415 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 80 [2021-03-10 18:34:32,650 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 84 [2021-03-10 18:34:32,931 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 86 [2021-03-10 18:34:33,243 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 89 [2021-03-10 18:34:33,507 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-03-10 18:34:33,864 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 88 [2021-03-10 18:34:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:34:34,311 INFO L93 Difference]: Finished difference Result 4773 states and 9804 transitions. [2021-03-10 18:34:34,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 18:34:34,311 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:34:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:34:34,315 INFO L225 Difference]: With dead ends: 4773 [2021-03-10 18:34:34,316 INFO L226 Difference]: Without dead ends: 4773 [2021-03-10 18:34:34,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 7440.1ms TimeCoverageRelationStatistics Valid=1574, Invalid=3682, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 18:34:34,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2021-03-10 18:34:34,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 3078. [2021-03-10 18:34:34,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3075 states have (on average 2.051382113821138) internal successors, (6308), 3077 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 6308 transitions. [2021-03-10 18:34:34,353 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 6308 transitions. Word has length 82 [2021-03-10 18:34:34,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:34:34,353 INFO L480 AbstractCegarLoop]: Abstraction has 3078 states and 6308 transitions. [2021-03-10 18:34:34,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:34,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 6308 transitions. [2021-03-10 18:34:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:34:34,356 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:34:34,356 INFO L519 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] [2021-03-10 18:34:34,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-10 18:34:34,356 INFO L428 AbstractCegarLoop]: === Iteration 37 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:34:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:34:34,357 INFO L82 PathProgramCache]: Analyzing trace with hash 621127538, now seen corresponding path program 34 times [2021-03-10 18:34:34,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:34:34,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238061251] [2021-03-10 18:34:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:34:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:34:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:34:34,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238061251] [2021-03-10 18:34:34,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:34:34,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:34:34,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103539837] [2021-03-10 18:34:34,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:34:34,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:34:34,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:34:34,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:34:34,963 INFO L87 Difference]: Start difference. First operand 3078 states and 6308 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:36,147 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:34:36,337 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-03-10 18:34:36,590 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-03-10 18:34:36,788 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-03-10 18:34:36,979 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2021-03-10 18:34:37,165 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-03-10 18:34:37,360 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2021-03-10 18:34:37,555 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2021-03-10 18:34:37,729 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-03-10 18:34:37,956 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2021-03-10 18:34:38,192 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:34:38,403 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 82 [2021-03-10 18:34:38,611 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2021-03-10 18:34:38,993 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2021-03-10 18:34:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:34:39,886 INFO L93 Difference]: Finished difference Result 4537 states and 9321 transitions. [2021-03-10 18:34:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:34:39,887 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:34:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:34:39,891 INFO L225 Difference]: With dead ends: 4537 [2021-03-10 18:34:39,891 INFO L226 Difference]: Without dead ends: 4537 [2021-03-10 18:34:39,892 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 4335.9ms TimeCoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:34:39,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4537 states. [2021-03-10 18:34:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4537 to 3199. [2021-03-10 18:34:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 3196 states have (on average 2.0535043804755944) internal successors, (6563), 3198 states have internal predecessors, (6563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 6563 transitions. [2021-03-10 18:34:39,922 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 6563 transitions. Word has length 82 [2021-03-10 18:34:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:34:39,922 INFO L480 AbstractCegarLoop]: Abstraction has 3199 states and 6563 transitions. [2021-03-10 18:34:39,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:39,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 6563 transitions. [2021-03-10 18:34:39,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:34:39,925 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:34:39,925 INFO L519 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] [2021-03-10 18:34:39,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-10 18:34:39,926 INFO L428 AbstractCegarLoop]: === Iteration 38 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:34:39,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:34:39,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1430486012, now seen corresponding path program 35 times [2021-03-10 18:34:39,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:34:39,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387849894] [2021-03-10 18:34:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:34:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:34:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:34:40,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387849894] [2021-03-10 18:34:40,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:34:40,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:34:40,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339725758] [2021-03-10 18:34:40,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:34:40,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:34:40,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:34:40,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:34:40,591 INFO L87 Difference]: Start difference. First operand 3199 states and 6563 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:41,767 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2021-03-10 18:34:41,910 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2021-03-10 18:34:42,069 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-10 18:34:42,245 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-03-10 18:34:42,408 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-03-10 18:34:42,610 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-03-10 18:34:42,770 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-03-10 18:34:42,950 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-03-10 18:34:43,119 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-03-10 18:34:43,338 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-03-10 18:34:43,530 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:34:43,723 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-03-10 18:34:43,920 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-03-10 18:34:44,124 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:34:44,313 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-03-10 18:34:44,544 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-03-10 18:34:44,741 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2021-03-10 18:34:44,977 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-03-10 18:34:45,191 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-03-10 18:34:45,401 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-03-10 18:34:45,604 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-10 18:34:45,829 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2021-03-10 18:34:46,112 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-03-10 18:34:46,377 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2021-03-10 18:34:46,588 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-03-10 18:34:46,837 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-03-10 18:34:47,097 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-03-10 18:34:47,328 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2021-03-10 18:34:47,604 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2021-03-10 18:34:47,912 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2021-03-10 18:34:48,172 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-03-10 18:34:48,547 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2021-03-10 18:34:48,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:34:48,962 INFO L93 Difference]: Finished difference Result 4563 states and 9384 transitions. [2021-03-10 18:34:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 18:34:48,963 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:34:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:34:48,967 INFO L225 Difference]: With dead ends: 4563 [2021-03-10 18:34:48,967 INFO L226 Difference]: Without dead ends: 4563 [2021-03-10 18:34:48,967 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 7593.9ms TimeCoverageRelationStatistics Valid=1616, Invalid=3786, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 18:34:48,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4563 states. [2021-03-10 18:34:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4563 to 3096. [2021-03-10 18:34:48,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3093 states have (on average 2.05205302295506) internal successors, (6347), 3095 states have internal predecessors, (6347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:49,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 6347 transitions. [2021-03-10 18:34:49,002 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 6347 transitions. Word has length 82 [2021-03-10 18:34:49,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:34:49,002 INFO L480 AbstractCegarLoop]: Abstraction has 3096 states and 6347 transitions. [2021-03-10 18:34:49,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:49,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 6347 transitions. [2021-03-10 18:34:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:34:49,005 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:34:49,005 INFO L519 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] [2021-03-10 18:34:49,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-10 18:34:49,005 INFO L428 AbstractCegarLoop]: === Iteration 39 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:34:49,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:34:49,005 INFO L82 PathProgramCache]: Analyzing trace with hash 416262518, now seen corresponding path program 36 times [2021-03-10 18:34:49,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:34:49,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670084466] [2021-03-10 18:34:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:34:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:34:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:34:49,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670084466] [2021-03-10 18:34:49,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:34:49,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:34:49,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506999574] [2021-03-10 18:34:49,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:34:49,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:34:49,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:34:49,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:34:49,808 INFO L87 Difference]: Start difference. First operand 3096 states and 6347 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:34:51,650 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2021-03-10 18:34:51,927 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-03-10 18:34:52,202 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-03-10 18:34:52,345 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2021-03-10 18:34:52,492 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-10 18:34:52,637 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-03-10 18:34:52,805 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-03-10 18:34:52,968 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-03-10 18:34:53,251 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:34:53,415 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-03-10 18:34:53,616 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2021-03-10 18:34:53,780 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2021-03-10 18:34:53,929 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-10 18:34:54,114 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-03-10 18:34:54,323 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-03-10 18:34:54,474 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:34:54,658 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-03-10 18:34:54,859 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 63 [2021-03-10 18:34:55,053 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2021-03-10 18:34:55,241 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:34:55,471 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2021-03-10 18:34:55,638 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-03-10 18:34:55,850 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2021-03-10 18:34:56,066 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2021-03-10 18:34:56,282 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-03-10 18:34:56,518 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-03-10 18:34:56,751 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 67 [2021-03-10 18:34:56,981 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-03-10 18:34:57,198 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2021-03-10 18:34:57,463 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-03-10 18:34:57,692 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2021-03-10 18:34:57,927 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-03-10 18:34:58,150 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-03-10 18:34:58,388 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-03-10 18:34:58,611 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 79 [2021-03-10 18:34:58,900 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2021-03-10 18:34:59,190 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-03-10 18:34:59,421 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 75 [2021-03-10 18:34:59,695 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-03-10 18:34:59,968 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 80 [2021-03-10 18:35:00,217 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2021-03-10 18:35:00,524 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-03-10 18:35:00,852 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2021-03-10 18:35:01,166 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 85 [2021-03-10 18:35:01,582 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 90 [2021-03-10 18:35:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:35:01,838 INFO L93 Difference]: Finished difference Result 3781 states and 7753 transitions. [2021-03-10 18:35:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-10 18:35:01,838 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:35:01,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:35:01,841 INFO L225 Difference]: With dead ends: 3781 [2021-03-10 18:35:01,842 INFO L226 Difference]: Without dead ends: 3781 [2021-03-10 18:35:01,842 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 11235.2ms TimeCoverageRelationStatistics Valid=2750, Invalid=6756, Unknown=0, NotChecked=0, Total=9506 [2021-03-10 18:35:01,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2021-03-10 18:35:01,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 2810. [2021-03-10 18:35:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2810 states, 2807 states have (on average 2.051300320627004) internal successors, (5758), 2809 states have internal predecessors, (5758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 5758 transitions. [2021-03-10 18:35:01,866 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 5758 transitions. Word has length 82 [2021-03-10 18:35:01,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:35:01,866 INFO L480 AbstractCegarLoop]: Abstraction has 2810 states and 5758 transitions. [2021-03-10 18:35:01,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 5758 transitions. [2021-03-10 18:35:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:35:01,868 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:35:01,869 INFO L519 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] [2021-03-10 18:35:01,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-10 18:35:01,869 INFO L428 AbstractCegarLoop]: === Iteration 40 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:35:01,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:35:01,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1869240312, now seen corresponding path program 37 times [2021-03-10 18:35:01,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:35:01,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79619642] [2021-03-10 18:35:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:35:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:35:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:35:02,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79619642] [2021-03-10 18:35:02,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:35:02,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:35:02,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216794695] [2021-03-10 18:35:02,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:35:02,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:35:02,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:35:02,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:35:02,492 INFO L87 Difference]: Start difference. First operand 2810 states and 5758 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:03,763 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:35:04,013 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:35:04,206 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:35:04,411 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-10 18:35:04,575 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:35:04,782 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:35:04,971 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:35:05,174 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-10 18:35:05,344 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-10 18:35:05,548 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:35:05,760 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:35:05,974 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-10 18:35:06,164 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:35:06,347 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:35:06,587 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-03-10 18:35:06,850 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-03-10 18:35:07,086 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2021-03-10 18:35:07,322 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:35:07,733 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2021-03-10 18:35:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:35:08,720 INFO L93 Difference]: Finished difference Result 4092 states and 8405 transitions. [2021-03-10 18:35:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 18:35:08,720 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:35:08,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:35:08,724 INFO L225 Difference]: With dead ends: 4092 [2021-03-10 18:35:08,724 INFO L226 Difference]: Without dead ends: 4092 [2021-03-10 18:35:08,725 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 5355.9ms TimeCoverageRelationStatistics Valid=1236, Invalid=3594, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 18:35:08,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4092 states. [2021-03-10 18:35:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4092 to 2866. [2021-03-10 18:35:08,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2863 states have (on average 2.050995459308418) internal successors, (5872), 2865 states have internal predecessors, (5872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 5872 transitions. [2021-03-10 18:35:08,753 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 5872 transitions. Word has length 82 [2021-03-10 18:35:08,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:35:08,753 INFO L480 AbstractCegarLoop]: Abstraction has 2866 states and 5872 transitions. [2021-03-10 18:35:08,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:08,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 5872 transitions. [2021-03-10 18:35:08,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:35:08,755 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:35:08,755 INFO L519 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] [2021-03-10 18:35:08,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-10 18:35:08,755 INFO L428 AbstractCegarLoop]: === Iteration 41 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:35:08,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:35:08,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1059881838, now seen corresponding path program 38 times [2021-03-10 18:35:08,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:35:08,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427570199] [2021-03-10 18:35:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:35:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:35:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:35:09,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427570199] [2021-03-10 18:35:09,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:35:09,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:35:09,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705771616] [2021-03-10 18:35:09,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:35:09,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:35:09,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:35:09,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:35:09,495 INFO L87 Difference]: Start difference. First operand 2866 states and 5872 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:10,556 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-03-10 18:35:10,862 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:35:11,111 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:35:11,318 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-03-10 18:35:11,537 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:35:11,737 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-03-10 18:35:11,953 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:35:12,153 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-03-10 18:35:12,351 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:35:12,559 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-03-10 18:35:12,734 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2021-03-10 18:35:12,952 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-03-10 18:35:13,183 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-03-10 18:35:13,416 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-03-10 18:35:13,631 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-10 18:35:13,823 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:35:14,081 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-03-10 18:35:14,332 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2021-03-10 18:35:14,551 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2021-03-10 18:35:14,783 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-03-10 18:35:15,018 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2021-03-10 18:35:15,253 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-03-10 18:35:15,539 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2021-03-10 18:35:15,844 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2021-03-10 18:35:16,121 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-03-10 18:35:16,524 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2021-03-10 18:35:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:35:16,924 INFO L93 Difference]: Finished difference Result 4079 states and 8372 transitions. [2021-03-10 18:35:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 18:35:16,924 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:35:16,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:35:16,928 INFO L225 Difference]: With dead ends: 4079 [2021-03-10 18:35:16,928 INFO L226 Difference]: Without dead ends: 4079 [2021-03-10 18:35:16,928 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 6687.5ms TimeCoverageRelationStatistics Valid=1311, Invalid=3111, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 18:35:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4079 states. [2021-03-10 18:35:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4079 to 3045. [2021-03-10 18:35:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 3042 states have (on average 2.051939513477975) internal successors, (6242), 3044 states have internal predecessors, (6242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 6242 transitions. [2021-03-10 18:35:16,957 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 6242 transitions. Word has length 82 [2021-03-10 18:35:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:35:16,958 INFO L480 AbstractCegarLoop]: Abstraction has 3045 states and 6242 transitions. [2021-03-10 18:35:16,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 6242 transitions. [2021-03-10 18:35:16,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:35:16,959 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:35:16,960 INFO L519 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] [2021-03-10 18:35:16,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-10 18:35:16,960 INFO L428 AbstractCegarLoop]: === Iteration 42 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:35:16,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:35:16,960 INFO L82 PathProgramCache]: Analyzing trace with hash -968880446, now seen corresponding path program 39 times [2021-03-10 18:35:16,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:35:16,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928614703] [2021-03-10 18:35:16,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:35:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:35:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:35:17,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928614703] [2021-03-10 18:35:17,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:35:17,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:35:17,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350927280] [2021-03-10 18:35:17,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:35:17,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:35:17,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:35:17,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:35:17,670 INFO L87 Difference]: Start difference. First operand 3045 states and 6242 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:18,878 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:35:19,066 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-03-10 18:35:19,328 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-03-10 18:35:19,530 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-03-10 18:35:19,727 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2021-03-10 18:35:19,921 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-03-10 18:35:20,129 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2021-03-10 18:35:20,332 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2021-03-10 18:35:20,511 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-03-10 18:35:20,741 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2021-03-10 18:35:20,976 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:35:21,191 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 82 [2021-03-10 18:35:21,405 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 84 [2021-03-10 18:35:21,799 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2021-03-10 18:35:22,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:35:22,698 INFO L93 Difference]: Finished difference Result 4401 states and 9049 transitions. [2021-03-10 18:35:22,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:35:22,699 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:35:22,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:35:22,703 INFO L225 Difference]: With dead ends: 4401 [2021-03-10 18:35:22,703 INFO L226 Difference]: Without dead ends: 4401 [2021-03-10 18:35:22,704 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 4546.9ms TimeCoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:35:22,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2021-03-10 18:35:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 3166. [2021-03-10 18:35:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3166 states, 3163 states have (on average 2.054062598798609) internal successors, (6497), 3165 states have internal predecessors, (6497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 6497 transitions. [2021-03-10 18:35:22,734 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 6497 transitions. Word has length 82 [2021-03-10 18:35:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:35:22,734 INFO L480 AbstractCegarLoop]: Abstraction has 3166 states and 6497 transitions. [2021-03-10 18:35:22,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 6497 transitions. [2021-03-10 18:35:22,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:35:22,736 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:35:22,737 INFO L519 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] [2021-03-10 18:35:22,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-10 18:35:22,737 INFO L428 AbstractCegarLoop]: === Iteration 43 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:35:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:35:22,737 INFO L82 PathProgramCache]: Analyzing trace with hash -159521972, now seen corresponding path program 40 times [2021-03-10 18:35:22,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:35:22,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11869817] [2021-03-10 18:35:22,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:35:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:35:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:35:23,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11869817] [2021-03-10 18:35:23,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:35:23,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:35:23,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455915578] [2021-03-10 18:35:23,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:35:23,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:35:23,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:35:23,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:35:23,325 INFO L87 Difference]: Start difference. First operand 3166 states and 6497 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:24,283 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-03-10 18:35:24,609 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:35:24,818 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-03-10 18:35:25,008 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-03-10 18:35:25,210 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2021-03-10 18:35:25,432 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:35:25,611 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2021-03-10 18:35:25,833 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-03-10 18:35:26,037 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:35:26,236 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:35:26,443 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:35:26,636 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-03-10 18:35:26,849 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:35:27,081 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-03-10 18:35:27,316 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-03-10 18:35:27,524 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:35:27,719 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-03-10 18:35:27,981 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-03-10 18:35:28,237 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-03-10 18:35:28,474 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-03-10 18:35:28,708 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2021-03-10 18:35:28,940 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 84 [2021-03-10 18:35:29,173 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-03-10 18:35:29,450 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-03-10 18:35:29,750 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 89 [2021-03-10 18:35:30,017 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2021-03-10 18:35:30,426 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 88 [2021-03-10 18:35:30,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:35:30,840 INFO L93 Difference]: Finished difference Result 4413 states and 9084 transitions. [2021-03-10 18:35:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 18:35:30,841 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:35:30,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:35:30,845 INFO L225 Difference]: With dead ends: 4413 [2021-03-10 18:35:30,845 INFO L226 Difference]: Without dead ends: 4413 [2021-03-10 18:35:30,846 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 6625.8ms TimeCoverageRelationStatistics Valid=1352, Invalid=3204, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 18:35:30,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2021-03-10 18:35:30,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 3063. [2021-03-10 18:35:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 3060 states have (on average 2.052614379084967) internal successors, (6281), 3062 states have internal predecessors, (6281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:30,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 6281 transitions. [2021-03-10 18:35:30,875 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 6281 transitions. Word has length 82 [2021-03-10 18:35:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:35:30,876 INFO L480 AbstractCegarLoop]: Abstraction has 3063 states and 6281 transitions. [2021-03-10 18:35:30,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:30,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 6281 transitions. [2021-03-10 18:35:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:35:30,878 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:35:30,878 INFO L519 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] [2021-03-10 18:35:30,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-10 18:35:30,878 INFO L428 AbstractCegarLoop]: === Iteration 44 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:35:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:35:30,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1173745466, now seen corresponding path program 41 times [2021-03-10 18:35:30,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:35:30,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664240667] [2021-03-10 18:35:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:35:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:35:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:35:31,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664240667] [2021-03-10 18:35:31,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:35:31,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:35:31,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365246850] [2021-03-10 18:35:31,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:35:31,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:35:31,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:35:31,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:35:31,613 INFO L87 Difference]: Start difference. First operand 3063 states and 6281 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:32,729 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2021-03-10 18:35:33,592 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2021-03-10 18:35:33,870 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-03-10 18:35:34,147 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-03-10 18:35:34,290 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2021-03-10 18:35:34,439 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-10 18:35:34,586 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-03-10 18:35:34,742 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-03-10 18:35:34,914 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-03-10 18:35:35,050 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-03-10 18:35:35,202 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:35:35,371 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-03-10 18:35:35,573 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2021-03-10 18:35:35,740 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2021-03-10 18:35:35,889 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-10 18:35:36,073 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-03-10 18:35:36,289 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2021-03-10 18:35:36,439 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:35:36,618 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 64 [2021-03-10 18:35:36,828 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-03-10 18:35:37,019 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 68 [2021-03-10 18:35:37,207 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-03-10 18:35:37,435 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 70 [2021-03-10 18:35:37,603 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-03-10 18:35:37,812 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2021-03-10 18:35:38,033 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-03-10 18:35:38,248 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-03-10 18:35:38,482 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:35:38,702 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 67 [2021-03-10 18:35:38,944 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2021-03-10 18:35:39,161 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:35:39,427 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2021-03-10 18:35:39,659 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-03-10 18:35:39,897 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-03-10 18:35:40,124 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-03-10 18:35:40,368 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-03-10 18:35:40,583 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-03-10 18:35:40,892 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-03-10 18:35:41,191 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-03-10 18:35:41,426 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2021-03-10 18:35:41,702 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-03-10 18:35:41,980 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-03-10 18:35:42,236 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-03-10 18:35:42,544 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2021-03-10 18:35:42,894 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2021-03-10 18:35:43,217 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-03-10 18:35:43,652 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2021-03-10 18:35:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:35:43,946 INFO L93 Difference]: Finished difference Result 3706 states and 7603 transitions. [2021-03-10 18:35:43,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-03-10 18:35:43,947 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:35:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:35:43,950 INFO L225 Difference]: With dead ends: 3706 [2021-03-10 18:35:43,950 INFO L226 Difference]: Without dead ends: 3706 [2021-03-10 18:35:43,951 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 11476.2ms TimeCoverageRelationStatistics Valid=2797, Invalid=6905, Unknown=0, NotChecked=0, Total=9702 [2021-03-10 18:35:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2021-03-10 18:35:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 2822. [2021-03-10 18:35:43,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2822 states, 2819 states have (on average 2.051081943951756) internal successors, (5782), 2821 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 5782 transitions. [2021-03-10 18:35:43,975 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 5782 transitions. Word has length 82 [2021-03-10 18:35:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:35:43,976 INFO L480 AbstractCegarLoop]: Abstraction has 2822 states and 5782 transitions. [2021-03-10 18:35:43,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:43,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 5782 transitions. [2021-03-10 18:35:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:35:43,977 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:35:43,977 INFO L519 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] [2021-03-10 18:35:43,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-10 18:35:43,978 INFO L428 AbstractCegarLoop]: === Iteration 45 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:35:43,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:35:43,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1582660242, now seen corresponding path program 42 times [2021-03-10 18:35:43,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:35:43,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36078255] [2021-03-10 18:35:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:35:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:35:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:35:44,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36078255] [2021-03-10 18:35:44,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:35:44,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:35:44,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495745447] [2021-03-10 18:35:44,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:35:44,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:35:44,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:35:44,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:35:44,745 INFO L87 Difference]: Start difference. First operand 2822 states and 5782 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:45,995 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2021-03-10 18:35:46,288 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-03-10 18:35:46,547 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2021-03-10 18:35:46,739 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:35:46,931 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 76 [2021-03-10 18:35:47,116 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2021-03-10 18:35:47,311 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 79 [2021-03-10 18:35:47,504 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2021-03-10 18:35:47,694 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:35:47,913 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-10 18:35:48,138 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2021-03-10 18:35:48,347 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 82 [2021-03-10 18:35:48,558 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2021-03-10 18:35:48,941 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 87 [2021-03-10 18:35:49,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:35:49,871 INFO L93 Difference]: Finished difference Result 3792 states and 7781 transitions. [2021-03-10 18:35:49,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:35:49,872 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:35:49,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:35:49,875 INFO L225 Difference]: With dead ends: 3792 [2021-03-10 18:35:49,875 INFO L226 Difference]: Without dead ends: 3792 [2021-03-10 18:35:49,876 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 4609.6ms TimeCoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:35:49,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2021-03-10 18:35:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 2979. [2021-03-10 18:35:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2976 states have (on average 2.0540994623655915) internal successors, (6113), 2978 states have internal predecessors, (6113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 6113 transitions. [2021-03-10 18:35:49,900 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 6113 transitions. Word has length 82 [2021-03-10 18:35:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:35:49,900 INFO L480 AbstractCegarLoop]: Abstraction has 2979 states and 6113 transitions. [2021-03-10 18:35:49,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:49,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 6113 transitions. [2021-03-10 18:35:49,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:35:49,902 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:35:49,902 INFO L519 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] [2021-03-10 18:35:49,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-10 18:35:49,902 INFO L428 AbstractCegarLoop]: === Iteration 46 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:35:49,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:35:49,902 INFO L82 PathProgramCache]: Analyzing trace with hash -773301768, now seen corresponding path program 43 times [2021-03-10 18:35:49,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:35:49,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857007435] [2021-03-10 18:35:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:35:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:35:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:35:50,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857007435] [2021-03-10 18:35:50,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:35:50,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:35:50,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125051001] [2021-03-10 18:35:50,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:35:50,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:35:50,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:35:50,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:35:50,517 INFO L87 Difference]: Start difference. First operand 2979 states and 6113 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:51,455 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-03-10 18:35:51,647 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2021-03-10 18:35:51,990 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-03-10 18:35:52,302 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:35:52,521 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-03-10 18:35:52,724 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:35:52,932 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:35:53,141 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:35:53,369 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-03-10 18:35:53,591 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-03-10 18:35:53,808 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:35:54,063 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-03-10 18:35:54,305 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-03-10 18:35:54,528 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-03-10 18:35:54,750 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2021-03-10 18:35:54,987 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 84 [2021-03-10 18:35:55,221 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-03-10 18:35:55,490 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-03-10 18:35:55,785 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 89 [2021-03-10 18:35:56,049 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2021-03-10 18:35:56,464 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 88 [2021-03-10 18:35:56,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:35:56,905 INFO L93 Difference]: Finished difference Result 3851 states and 7916 transitions. [2021-03-10 18:35:56,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-10 18:35:56,906 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:35:56,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:35:56,909 INFO L225 Difference]: With dead ends: 3851 [2021-03-10 18:35:56,909 INFO L226 Difference]: Without dead ends: 3851 [2021-03-10 18:35:56,909 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 5527.5ms TimeCoverageRelationStatistics Valid=1094, Invalid=2688, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 18:35:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2021-03-10 18:35:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3087. [2021-03-10 18:35:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 3084 states have (on average 2.0541504539559012) internal successors, (6335), 3086 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 6335 transitions. [2021-03-10 18:35:56,936 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 6335 transitions. Word has length 82 [2021-03-10 18:35:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:35:56,936 INFO L480 AbstractCegarLoop]: Abstraction has 3087 states and 6335 transitions. [2021-03-10 18:35:56,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:56,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 6335 transitions. [2021-03-10 18:35:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:35:56,938 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:35:56,938 INFO L519 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] [2021-03-10 18:35:56,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-10 18:35:56,938 INFO L428 AbstractCegarLoop]: === Iteration 47 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:35:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:35:56,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1787525262, now seen corresponding path program 44 times [2021-03-10 18:35:56,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:35:56,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403411958] [2021-03-10 18:35:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:35:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:35:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:35:57,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403411958] [2021-03-10 18:35:57,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:35:57,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:35:57,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983406685] [2021-03-10 18:35:57,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:35:57,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:35:57,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:35:57,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:35:57,836 INFO L87 Difference]: Start difference. First operand 3087 states and 6335 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:35:59,013 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2021-03-10 18:35:59,648 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2021-03-10 18:36:00,046 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2021-03-10 18:36:00,333 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-03-10 18:36:00,616 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-03-10 18:36:00,769 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2021-03-10 18:36:00,920 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-10 18:36:01,068 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-03-10 18:36:01,226 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-03-10 18:36:01,391 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2021-03-10 18:36:01,530 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-03-10 18:36:01,684 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:36:01,855 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-03-10 18:36:02,066 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2021-03-10 18:36:02,235 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2021-03-10 18:36:02,387 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-10 18:36:02,572 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 64 [2021-03-10 18:36:02,816 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2021-03-10 18:36:02,970 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:36:03,174 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-03-10 18:36:03,378 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-03-10 18:36:03,575 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-03-10 18:36:03,762 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-03-10 18:36:03,997 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-03-10 18:36:04,165 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-03-10 18:36:04,375 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2021-03-10 18:36:04,605 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-03-10 18:36:04,832 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-03-10 18:36:05,064 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2021-03-10 18:36:05,292 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-03-10 18:36:05,520 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-03-10 18:36:05,733 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-03-10 18:36:05,995 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2021-03-10 18:36:06,223 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-03-10 18:36:06,461 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-03-10 18:36:06,701 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-03-10 18:36:06,938 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2021-03-10 18:36:07,150 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 79 [2021-03-10 18:36:07,442 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 81 [2021-03-10 18:36:07,738 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-03-10 18:36:07,966 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 75 [2021-03-10 18:36:08,241 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-03-10 18:36:08,519 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2021-03-10 18:36:08,787 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2021-03-10 18:36:09,091 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 88 [2021-03-10 18:36:09,427 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 91 [2021-03-10 18:36:09,752 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 85 [2021-03-10 18:36:10,191 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 90 [2021-03-10 18:36:10,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:36:10,506 INFO L93 Difference]: Finished difference Result 3601 states and 7393 transitions. [2021-03-10 18:36:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-03-10 18:36:10,507 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:36:10,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:36:10,510 INFO L225 Difference]: With dead ends: 3601 [2021-03-10 18:36:10,510 INFO L226 Difference]: Without dead ends: 3601 [2021-03-10 18:36:10,510 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1571 ImplicationChecksByTransitivity, 11770.9ms TimeCoverageRelationStatistics Valid=2840, Invalid=7060, Unknown=0, NotChecked=0, Total=9900 [2021-03-10 18:36:10,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-03-10 18:36:10,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 2876. [2021-03-10 18:36:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2873 states have (on average 2.052210233205708) internal successors, (5896), 2875 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 5896 transitions. [2021-03-10 18:36:10,535 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 5896 transitions. Word has length 82 [2021-03-10 18:36:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:36:10,535 INFO L480 AbstractCegarLoop]: Abstraction has 2876 states and 5896 transitions. [2021-03-10 18:36:10,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 5896 transitions. [2021-03-10 18:36:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:36:10,537 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:36:10,537 INFO L519 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] [2021-03-10 18:36:10,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-10 18:36:10,537 INFO L428 AbstractCegarLoop]: === Iteration 48 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:36:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:36:10,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1606355796, now seen corresponding path program 45 times [2021-03-10 18:36:10,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:36:10,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261655828] [2021-03-10 18:36:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:36:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:36:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:36:11,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261655828] [2021-03-10 18:36:11,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:36:11,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:36:11,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159936534] [2021-03-10 18:36:11,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:36:11,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:36:11,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:36:11,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:36:11,411 INFO L87 Difference]: Start difference. First operand 2876 states and 5896 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:12,562 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2021-03-10 18:36:13,200 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2021-03-10 18:36:13,593 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2021-03-10 18:36:13,875 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-03-10 18:36:14,045 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-03-10 18:36:14,311 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-03-10 18:36:14,455 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2021-03-10 18:36:14,605 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-10 18:36:14,752 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-03-10 18:36:14,909 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-03-10 18:36:15,074 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2021-03-10 18:36:15,223 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-03-10 18:36:15,385 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-10 18:36:15,555 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-03-10 18:36:15,764 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2021-03-10 18:36:15,932 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2021-03-10 18:36:16,084 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-10 18:36:16,270 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2021-03-10 18:36:16,496 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2021-03-10 18:36:16,648 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:36:16,833 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-03-10 18:36:17,016 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-03-10 18:36:17,209 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-03-10 18:36:17,412 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-03-10 18:36:17,619 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2021-03-10 18:36:17,867 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-03-10 18:36:18,035 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-03-10 18:36:18,245 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 70 [2021-03-10 18:36:18,468 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-03-10 18:36:18,685 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-03-10 18:36:18,919 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 74 [2021-03-10 18:36:19,147 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-03-10 18:36:19,413 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2021-03-10 18:36:19,634 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-03-10 18:36:19,921 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-03-10 18:36:20,159 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-03-10 18:36:20,400 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-03-10 18:36:20,632 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-03-10 18:36:20,881 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-03-10 18:36:21,114 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 81 [2021-03-10 18:36:21,417 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2021-03-10 18:36:21,711 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-03-10 18:36:21,969 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-03-10 18:36:22,250 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 82 [2021-03-10 18:36:22,530 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2021-03-10 18:36:22,793 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-03-10 18:36:23,112 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 88 [2021-03-10 18:36:23,481 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 91 [2021-03-10 18:36:23,809 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2021-03-10 18:36:24,261 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 90 [2021-03-10 18:36:24,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:36:24,594 INFO L93 Difference]: Finished difference Result 3333 states and 6825 transitions. [2021-03-10 18:36:24,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-03-10 18:36:24,595 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:36:24,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:36:24,598 INFO L225 Difference]: With dead ends: 3333 [2021-03-10 18:36:24,598 INFO L226 Difference]: Without dead ends: 3333 [2021-03-10 18:36:24,599 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 12312.9ms TimeCoverageRelationStatistics Valid=2901, Invalid=7401, Unknown=0, NotChecked=0, Total=10302 [2021-03-10 18:36:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2021-03-10 18:36:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 2852. [2021-03-10 18:36:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2849 states have (on average 2.051948051948052) internal successors, (5846), 2851 states have internal predecessors, (5846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 5846 transitions. [2021-03-10 18:36:24,622 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 5846 transitions. Word has length 82 [2021-03-10 18:36:24,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:36:24,623 INFO L480 AbstractCegarLoop]: Abstraction has 2852 states and 5846 transitions. [2021-03-10 18:36:24,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:24,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 5846 transitions. [2021-03-10 18:36:24,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:36:24,624 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:36:24,624 INFO L519 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] [2021-03-10 18:36:24,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-10 18:36:24,624 INFO L428 AbstractCegarLoop]: === Iteration 49 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:36:24,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:36:24,625 INFO L82 PathProgramCache]: Analyzing trace with hash 631894364, now seen corresponding path program 46 times [2021-03-10 18:36:24,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:36:24,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662620479] [2021-03-10 18:36:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:36:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:36:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:36:25,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662620479] [2021-03-10 18:36:25,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:36:25,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:36:25,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129616805] [2021-03-10 18:36:25,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:36:25,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:36:25,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:36:25,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:36:25,350 INFO L87 Difference]: Start difference. First operand 2852 states and 5846 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:26,604 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-03-10 18:36:26,769 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-03-10 18:36:26,941 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:36:27,136 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-03-10 18:36:27,317 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2021-03-10 18:36:27,473 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:36:27,669 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:36:27,866 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:36:28,053 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-03-10 18:36:28,238 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-03-10 18:36:28,442 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:36:28,658 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2021-03-10 18:36:28,847 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2021-03-10 18:36:29,074 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:36:29,331 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2021-03-10 18:36:29,597 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2021-03-10 18:36:29,818 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-03-10 18:36:30,159 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2021-03-10 18:36:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:36:31,326 INFO L93 Difference]: Finished difference Result 4029 states and 8259 transitions. [2021-03-10 18:36:31,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 18:36:31,327 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:36:31,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:36:31,330 INFO L225 Difference]: With dead ends: 4029 [2021-03-10 18:36:31,330 INFO L226 Difference]: Without dead ends: 4029 [2021-03-10 18:36:31,331 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 5327.4ms TimeCoverageRelationStatistics Valid=1211, Invalid=3481, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 18:36:31,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2021-03-10 18:36:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 2925. [2021-03-10 18:36:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2922 states have (on average 2.0509924709103355) internal successors, (5993), 2924 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5993 transitions. [2021-03-10 18:36:31,357 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5993 transitions. Word has length 82 [2021-03-10 18:36:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:36:31,357 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 5993 transitions. [2021-03-10 18:36:31,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:31,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5993 transitions. [2021-03-10 18:36:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:36:31,359 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:36:31,359 INFO L519 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] [2021-03-10 18:36:31,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-10 18:36:31,359 INFO L428 AbstractCegarLoop]: === Iteration 50 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:36:31,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:36:31,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2051739006, now seen corresponding path program 47 times [2021-03-10 18:36:31,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:36:31,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827417789] [2021-03-10 18:36:31,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:36:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:36:31,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:36:31,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827417789] [2021-03-10 18:36:31,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:36:31,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:36:31,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988339408] [2021-03-10 18:36:31,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:36:31,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:36:31,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:36:31,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:36:31,997 INFO L87 Difference]: Start difference. First operand 2925 states and 5993 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:33,206 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-03-10 18:36:33,370 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:36:33,540 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:36:33,730 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:36:33,880 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:36:34,048 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2021-03-10 18:36:34,207 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:36:34,401 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:36:34,593 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2021-03-10 18:36:34,792 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:36:34,970 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:36:35,157 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-03-10 18:36:35,332 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-03-10 18:36:35,524 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:36:35,742 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2021-03-10 18:36:35,934 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2021-03-10 18:36:36,124 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2021-03-10 18:36:36,310 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-03-10 18:36:36,510 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:36:36,760 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 79 [2021-03-10 18:36:36,996 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2021-03-10 18:36:37,245 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2021-03-10 18:36:37,459 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-03-10 18:36:37,775 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2021-03-10 18:36:38,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:36:38,755 INFO L93 Difference]: Finished difference Result 4167 states and 8548 transitions. [2021-03-10 18:36:38,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 18:36:38,755 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:36:38,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:36:38,759 INFO L225 Difference]: With dead ends: 4167 [2021-03-10 18:36:38,760 INFO L226 Difference]: Without dead ends: 4167 [2021-03-10 18:36:38,760 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 6160.2ms TimeCoverageRelationStatistics Valid=1444, Invalid=4106, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 18:36:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2021-03-10 18:36:38,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 2936. [2021-03-10 18:36:38,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2933 states have (on average 2.051142175247187) internal successors, (6016), 2935 states have internal predecessors, (6016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 6016 transitions. [2021-03-10 18:36:38,798 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 6016 transitions. Word has length 82 [2021-03-10 18:36:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:36:38,798 INFO L480 AbstractCegarLoop]: Abstraction has 2936 states and 6016 transitions. [2021-03-10 18:36:38,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 6016 transitions. [2021-03-10 18:36:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:36:38,800 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:36:38,800 INFO L519 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] [2021-03-10 18:36:38,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-10 18:36:38,800 INFO L428 AbstractCegarLoop]: === Iteration 51 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:36:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:36:38,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1433869816, now seen corresponding path program 48 times [2021-03-10 18:36:38,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:36:38,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626661612] [2021-03-10 18:36:38,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:36:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:36:39,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:36:39,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626661612] [2021-03-10 18:36:39,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:36:39,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:36:39,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693642397] [2021-03-10 18:36:39,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:36:39,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:36:39,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:36:39,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:36:39,453 INFO L87 Difference]: Start difference. First operand 2936 states and 6016 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:40,408 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2021-03-10 18:36:40,603 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-03-10 18:36:40,771 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2021-03-10 18:36:40,945 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-03-10 18:36:41,164 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-03-10 18:36:41,327 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2021-03-10 18:36:41,496 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2021-03-10 18:36:41,668 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-03-10 18:36:41,902 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2021-03-10 18:36:42,095 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:36:42,281 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:36:42,479 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:36:42,687 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-03-10 18:36:42,878 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2021-03-10 18:36:43,102 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-03-10 18:36:43,300 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-03-10 18:36:43,535 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2021-03-10 18:36:43,752 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-03-10 18:36:43,962 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2021-03-10 18:36:44,168 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:36:44,394 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-03-10 18:36:44,679 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-03-10 18:36:44,941 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-03-10 18:36:45,167 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 75 [2021-03-10 18:36:45,413 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-03-10 18:36:45,663 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 80 [2021-03-10 18:36:45,902 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-03-10 18:36:46,182 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2021-03-10 18:36:46,499 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 84 [2021-03-10 18:36:46,797 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-03-10 18:36:47,204 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-03-10 18:36:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:36:47,545 INFO L93 Difference]: Finished difference Result 4111 states and 8429 transitions. [2021-03-10 18:36:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 18:36:47,546 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:36:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:36:47,550 INFO L225 Difference]: With dead ends: 4111 [2021-03-10 18:36:47,550 INFO L226 Difference]: Without dead ends: 4111 [2021-03-10 18:36:47,550 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 7469.9ms TimeCoverageRelationStatistics Valid=1528, Invalid=3584, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 18:36:47,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2021-03-10 18:36:47,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 3066. [2021-03-10 18:36:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3063 states have (on average 2.0522363695723147) internal successors, (6286), 3065 states have internal predecessors, (6286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 6286 transitions. [2021-03-10 18:36:47,577 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 6286 transitions. Word has length 82 [2021-03-10 18:36:47,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:36:47,577 INFO L480 AbstractCegarLoop]: Abstraction has 3066 states and 6286 transitions. [2021-03-10 18:36:47,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:47,577 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 6286 transitions. [2021-03-10 18:36:47,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:36:47,579 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:36:47,579 INFO L519 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] [2021-03-10 18:36:47,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-10 18:36:47,579 INFO L428 AbstractCegarLoop]: === Iteration 52 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:36:47,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:36:47,580 INFO L82 PathProgramCache]: Analyzing trace with hash -810424990, now seen corresponding path program 49 times [2021-03-10 18:36:47,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:36:47,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584759324] [2021-03-10 18:36:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:36:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:36:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:36:48,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584759324] [2021-03-10 18:36:48,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:36:48,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:36:48,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240341758] [2021-03-10 18:36:48,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:36:48,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:36:48,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:36:48,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:36:48,319 INFO L87 Difference]: Start difference. First operand 3066 states and 6286 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:49,627 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:36:49,906 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:36:50,100 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:36:50,309 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2021-03-10 18:36:50,477 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:36:50,684 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-03-10 18:36:50,868 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:36:51,071 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:36:51,238 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-03-10 18:36:51,439 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2021-03-10 18:36:51,645 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2021-03-10 18:36:51,875 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:36:52,068 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-03-10 18:36:52,251 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2021-03-10 18:36:52,495 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 79 [2021-03-10 18:36:52,759 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2021-03-10 18:36:53,007 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2021-03-10 18:36:53,238 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-03-10 18:36:53,637 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2021-03-10 18:36:54,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:36:54,661 INFO L93 Difference]: Finished difference Result 4428 states and 9094 transitions. [2021-03-10 18:36:54,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 18:36:54,662 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:36:54,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:36:54,666 INFO L225 Difference]: With dead ends: 4428 [2021-03-10 18:36:54,666 INFO L226 Difference]: Without dead ends: 4428 [2021-03-10 18:36:54,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 5493.7ms TimeCoverageRelationStatistics Valid=1235, Invalid=3595, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 18:36:54,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2021-03-10 18:36:54,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 3114. [2021-03-10 18:36:54,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 3111 states have (on average 2.052073288331726) internal successors, (6384), 3113 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 6384 transitions. [2021-03-10 18:36:54,695 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 6384 transitions. Word has length 82 [2021-03-10 18:36:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:36:54,695 INFO L480 AbstractCegarLoop]: Abstraction has 3114 states and 6384 transitions. [2021-03-10 18:36:54,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:54,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 6384 transitions. [2021-03-10 18:36:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:36:54,697 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:36:54,697 INFO L519 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] [2021-03-10 18:36:54,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-10 18:36:54,697 INFO L428 AbstractCegarLoop]: === Iteration 53 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:36:54,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:36:54,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1066516, now seen corresponding path program 50 times [2021-03-10 18:36:54,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:36:54,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082972253] [2021-03-10 18:36:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:36:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:36:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:36:55,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082972253] [2021-03-10 18:36:55,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:36:55,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:36:55,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439888258] [2021-03-10 18:36:55,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:36:55,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:36:55,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:36:55,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:36:55,341 INFO L87 Difference]: Start difference. First operand 3114 states and 6384 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:36:56,379 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2021-03-10 18:36:56,601 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2021-03-10 18:36:56,749 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:36:56,917 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-10 18:36:57,098 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-03-10 18:36:57,305 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2021-03-10 18:36:57,472 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:36:57,656 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-03-10 18:36:57,835 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-03-10 18:36:58,055 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-03-10 18:36:58,251 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:36:58,465 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-03-10 18:36:58,666 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-03-10 18:36:58,877 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:36:59,073 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2021-03-10 18:36:59,290 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:36:59,494 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:36:59,738 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-03-10 18:36:59,979 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-03-10 18:37:00,196 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:37:00,407 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-10 18:37:00,649 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2021-03-10 18:37:00,939 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 81 [2021-03-10 18:37:01,203 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2021-03-10 18:37:01,426 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2021-03-10 18:37:01,684 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-03-10 18:37:01,936 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-03-10 18:37:02,179 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-03-10 18:37:02,469 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-03-10 18:37:02,795 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:37:03,100 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-03-10 18:37:03,518 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-03-10 18:37:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:37:03,834 INFO L93 Difference]: Finished difference Result 4486 states and 9206 transitions. [2021-03-10 18:37:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 18:37:03,834 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:37:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:37:03,838 INFO L225 Difference]: With dead ends: 4486 [2021-03-10 18:37:03,838 INFO L226 Difference]: Without dead ends: 4486 [2021-03-10 18:37:03,839 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 7735.3ms TimeCoverageRelationStatistics Valid=1573, Invalid=3683, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 18:37:03,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2021-03-10 18:37:03,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3072. [2021-03-10 18:37:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3069 states have (on average 2.0521342456826326) internal successors, (6298), 3071 states have internal predecessors, (6298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 6298 transitions. [2021-03-10 18:37:03,868 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 6298 transitions. Word has length 82 [2021-03-10 18:37:03,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:37:03,868 INFO L480 AbstractCegarLoop]: Abstraction has 3072 states and 6298 transitions. [2021-03-10 18:37:03,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:03,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 6298 transitions. [2021-03-10 18:37:03,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:37:03,870 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:37:03,870 INFO L519 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] [2021-03-10 18:37:03,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-10 18:37:03,870 INFO L428 AbstractCegarLoop]: === Iteration 54 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:37:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:37:03,871 INFO L82 PathProgramCache]: Analyzing trace with hash 89934876, now seen corresponding path program 51 times [2021-03-10 18:37:03,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:37:03,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940905589] [2021-03-10 18:37:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:37:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:37:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:37:04,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940905589] [2021-03-10 18:37:04,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:37:04,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:37:04,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713769476] [2021-03-10 18:37:04,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:37:04,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:37:04,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:37:04,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:37:04,637 INFO L87 Difference]: Start difference. First operand 3072 states and 6298 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:05,951 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:37:06,167 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:37:06,455 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-03-10 18:37:06,663 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2021-03-10 18:37:06,866 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-03-10 18:37:07,062 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-03-10 18:37:07,281 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2021-03-10 18:37:07,483 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2021-03-10 18:37:07,668 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2021-03-10 18:37:07,914 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2021-03-10 18:37:08,158 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2021-03-10 18:37:08,374 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2021-03-10 18:37:08,586 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 79 [2021-03-10 18:37:08,974 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2021-03-10 18:37:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:37:09,956 INFO L93 Difference]: Finished difference Result 4284 states and 8794 transitions. [2021-03-10 18:37:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:37:09,956 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:37:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:37:09,960 INFO L225 Difference]: With dead ends: 4284 [2021-03-10 18:37:09,960 INFO L226 Difference]: Without dead ends: 4284 [2021-03-10 18:37:09,961 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 4650.9ms TimeCoverageRelationStatistics Valid=1026, Invalid=3134, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:37:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2021-03-10 18:37:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 3193. [2021-03-10 18:37:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3193 states, 3190 states have (on average 2.0542319749216302) internal successors, (6553), 3192 states have internal predecessors, (6553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 6553 transitions. [2021-03-10 18:37:09,989 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 6553 transitions. Word has length 82 [2021-03-10 18:37:09,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:37:09,989 INFO L480 AbstractCegarLoop]: Abstraction has 3193 states and 6553 transitions. [2021-03-10 18:37:09,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 6553 transitions. [2021-03-10 18:37:09,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:37:09,991 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:37:09,991 INFO L519 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] [2021-03-10 18:37:09,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-10 18:37:09,991 INFO L428 AbstractCegarLoop]: === Iteration 55 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:37:09,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:37:09,991 INFO L82 PathProgramCache]: Analyzing trace with hash 899293350, now seen corresponding path program 52 times [2021-03-10 18:37:09,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:37:09,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294403923] [2021-03-10 18:37:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:37:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:37:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:37:10,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294403923] [2021-03-10 18:37:10,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:37:10,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:37:10,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896571744] [2021-03-10 18:37:10,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:37:10,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:37:10,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:37:10,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:37:10,661 INFO L87 Difference]: Start difference. First operand 3193 states and 6553 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:11,708 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2021-03-10 18:37:11,941 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2021-03-10 18:37:12,090 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:37:12,263 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-10 18:37:12,448 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-03-10 18:37:12,617 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-03-10 18:37:12,819 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2021-03-10 18:37:12,990 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-03-10 18:37:13,180 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-03-10 18:37:13,359 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-03-10 18:37:13,586 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2021-03-10 18:37:13,784 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:37:13,996 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-03-10 18:37:14,195 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:37:14,407 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:37:14,624 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-03-10 18:37:14,846 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:37:15,053 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:37:15,304 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-03-10 18:37:15,530 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-03-10 18:37:15,752 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-03-10 18:37:15,972 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:37:16,208 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-03-10 18:37:16,506 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-03-10 18:37:16,775 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-03-10 18:37:16,996 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-03-10 18:37:17,251 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-03-10 18:37:17,509 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-03-10 18:37:17,757 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-03-10 18:37:18,069 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-03-10 18:37:18,394 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:37:18,722 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-03-10 18:37:19,150 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-03-10 18:37:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:37:19,485 INFO L93 Difference]: Finished difference Result 4354 states and 8942 transitions. [2021-03-10 18:37:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 18:37:19,486 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:37:19,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:37:19,490 INFO L225 Difference]: With dead ends: 4354 [2021-03-10 18:37:19,490 INFO L226 Difference]: Without dead ends: 4354 [2021-03-10 18:37:19,490 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 7990.5ms TimeCoverageRelationStatistics Valid=1615, Invalid=3787, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 18:37:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4354 states. [2021-03-10 18:37:19,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4354 to 3099. [2021-03-10 18:37:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 3096 states have (on average 2.0526485788113695) internal successors, (6355), 3098 states have internal predecessors, (6355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 6355 transitions. [2021-03-10 18:37:19,520 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 6355 transitions. Word has length 82 [2021-03-10 18:37:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:37:19,520 INFO L480 AbstractCegarLoop]: Abstraction has 3099 states and 6355 transitions. [2021-03-10 18:37:19,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:19,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 6355 transitions. [2021-03-10 18:37:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:37:19,522 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:37:19,522 INFO L519 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] [2021-03-10 18:37:19,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-10 18:37:19,522 INFO L428 AbstractCegarLoop]: === Iteration 56 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:37:19,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:37:19,522 INFO L82 PathProgramCache]: Analyzing trace with hash -114930144, now seen corresponding path program 53 times [2021-03-10 18:37:19,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:37:19,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428571473] [2021-03-10 18:37:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:37:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:37:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:37:20,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428571473] [2021-03-10 18:37:20,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:37:20,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:37:20,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498580704] [2021-03-10 18:37:20,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:37:20,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:37:20,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:37:20,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:37:20,279 INFO L87 Difference]: Start difference. First operand 3099 states and 6355 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:21,322 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2021-03-10 18:37:21,540 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2021-03-10 18:37:21,686 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:37:21,853 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-10 18:37:22,035 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-03-10 18:37:22,205 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-03-10 18:37:22,406 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-03-10 18:37:22,573 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-03-10 18:37:22,776 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-03-10 18:37:22,951 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-03-10 18:37:23,132 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-03-10 18:37:23,340 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-03-10 18:37:23,537 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-03-10 18:37:23,738 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-03-10 18:37:23,940 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-03-10 18:37:24,146 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-03-10 18:37:24,353 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-03-10 18:37:24,572 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 75 [2021-03-10 18:37:24,801 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-03-10 18:37:25,046 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-03-10 18:37:25,282 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-03-10 18:37:25,498 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-03-10 18:37:25,707 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 72 [2021-03-10 18:37:25,934 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-03-10 18:37:26,142 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-03-10 18:37:26,405 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 82 [2021-03-10 18:37:26,676 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2021-03-10 18:37:26,904 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-03-10 18:37:27,165 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2021-03-10 18:37:27,423 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-03-10 18:37:27,665 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-03-10 18:37:27,954 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 84 [2021-03-10 18:37:28,269 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 87 [2021-03-10 18:37:28,538 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-03-10 18:37:28,902 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2021-03-10 18:37:29,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:37:29,308 INFO L93 Difference]: Finished difference Result 4204 states and 8620 transitions. [2021-03-10 18:37:29,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-10 18:37:29,309 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:37:29,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:37:29,313 INFO L225 Difference]: With dead ends: 4204 [2021-03-10 18:37:29,313 INFO L226 Difference]: Without dead ends: 4204 [2021-03-10 18:37:29,313 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 8369.5ms TimeCoverageRelationStatistics Valid=1711, Invalid=3989, Unknown=0, NotChecked=0, Total=5700 [2021-03-10 18:37:29,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-03-10 18:37:29,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3172. [2021-03-10 18:37:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3172 states, 3169 states have (on average 2.0520668980751027) internal successors, (6503), 3171 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 6503 transitions. [2021-03-10 18:37:29,341 INFO L78 Accepts]: Start accepts. Automaton has 3172 states and 6503 transitions. Word has length 82 [2021-03-10 18:37:29,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:37:29,341 INFO L480 AbstractCegarLoop]: Abstraction has 3172 states and 6503 transitions. [2021-03-10 18:37:29,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:29,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3172 states and 6503 transitions. [2021-03-10 18:37:29,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:37:29,343 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:37:29,343 INFO L519 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] [2021-03-10 18:37:29,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-10 18:37:29,343 INFO L428 AbstractCegarLoop]: === Iteration 57 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:37:29,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:37:29,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1894534322, now seen corresponding path program 54 times [2021-03-10 18:37:29,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:37:29,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223673633] [2021-03-10 18:37:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:37:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:37:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:37:30,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223673633] [2021-03-10 18:37:30,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:37:30,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:37:30,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900177778] [2021-03-10 18:37:30,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:37:30,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:37:30,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:37:30,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:37:30,010 INFO L87 Difference]: Start difference. First operand 3172 states and 6503 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:31,300 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:37:31,572 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:37:31,769 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:37:31,977 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2021-03-10 18:37:32,146 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:37:32,354 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-03-10 18:37:32,543 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:37:32,745 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:37:32,916 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-03-10 18:37:33,118 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2021-03-10 18:37:33,340 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2021-03-10 18:37:33,575 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:37:33,769 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-03-10 18:37:33,956 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2021-03-10 18:37:34,199 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 79 [2021-03-10 18:37:34,465 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2021-03-10 18:37:34,691 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2021-03-10 18:37:34,924 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-03-10 18:37:35,328 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2021-03-10 18:37:36,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:37:36,314 INFO L93 Difference]: Finished difference Result 5034 states and 10345 transitions. [2021-03-10 18:37:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 18:37:36,315 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:37:36,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:37:36,319 INFO L225 Difference]: With dead ends: 5034 [2021-03-10 18:37:36,319 INFO L226 Difference]: Without dead ends: 5034 [2021-03-10 18:37:36,319 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 5537.7ms TimeCoverageRelationStatistics Valid=1235, Invalid=3595, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 18:37:36,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2021-03-10 18:37:36,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 3228. [2021-03-10 18:37:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3228 states, 3225 states have (on average 2.0517829457364343) internal successors, (6617), 3227 states have internal predecessors, (6617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3228 states to 3228 states and 6617 transitions. [2021-03-10 18:37:36,351 INFO L78 Accepts]: Start accepts. Automaton has 3228 states and 6617 transitions. Word has length 82 [2021-03-10 18:37:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:37:36,352 INFO L480 AbstractCegarLoop]: Abstraction has 3228 states and 6617 transitions. [2021-03-10 18:37:36,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3228 states and 6617 transitions. [2021-03-10 18:37:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:37:36,354 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:37:36,354 INFO L519 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] [2021-03-10 18:37:36,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-10 18:37:36,354 INFO L428 AbstractCegarLoop]: === Iteration 58 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:37:36,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:37:36,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1591074500, now seen corresponding path program 55 times [2021-03-10 18:37:36,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:37:36,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023378102] [2021-03-10 18:37:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:37:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:37:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:37:37,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023378102] [2021-03-10 18:37:37,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:37:37,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:37:37,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429125092] [2021-03-10 18:37:37,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:37:37,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:37:37,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:37:37,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:37:37,067 INFO L87 Difference]: Start difference. First operand 3228 states and 6617 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:37,999 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-03-10 18:37:38,297 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:37:38,544 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:37:38,749 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-03-10 18:37:38,965 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:37:39,147 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-03-10 18:37:39,369 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:37:39,570 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-03-10 18:37:39,771 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:37:39,982 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:37:40,169 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2021-03-10 18:37:40,392 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-03-10 18:37:40,627 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-03-10 18:37:40,865 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2021-03-10 18:37:41,083 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-10 18:37:41,284 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-03-10 18:37:41,559 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 81 [2021-03-10 18:37:41,813 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2021-03-10 18:37:42,040 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2021-03-10 18:37:42,298 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-03-10 18:37:42,541 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-03-10 18:37:42,793 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-03-10 18:37:43,080 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-03-10 18:37:43,387 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:37:43,698 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-03-10 18:37:44,134 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-03-10 18:37:44,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:37:44,436 INFO L93 Difference]: Finished difference Result 4984 states and 10236 transitions. [2021-03-10 18:37:44,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-10 18:37:44,437 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:37:44,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:37:44,441 INFO L225 Difference]: With dead ends: 4984 [2021-03-10 18:37:44,441 INFO L226 Difference]: Without dead ends: 4984 [2021-03-10 18:37:44,442 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 6770.5ms TimeCoverageRelationStatistics Valid=1310, Invalid=3112, Unknown=0, NotChecked=0, Total=4422 [2021-03-10 18:37:44,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4984 states. [2021-03-10 18:37:44,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4984 to 3334. [2021-03-10 18:37:44,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 3331 states have (on average 2.053137196037226) internal successors, (6839), 3333 states have internal predecessors, (6839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 6839 transitions. [2021-03-10 18:37:44,482 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 6839 transitions. Word has length 82 [2021-03-10 18:37:44,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:37:44,482 INFO L480 AbstractCegarLoop]: Abstraction has 3334 states and 6839 transitions. [2021-03-10 18:37:44,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 6839 transitions. [2021-03-10 18:37:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:37:44,484 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:37:44,484 INFO L519 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] [2021-03-10 18:37:44,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-10 18:37:44,484 INFO L428 AbstractCegarLoop]: === Iteration 59 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:37:44,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:37:44,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1500073108, now seen corresponding path program 56 times [2021-03-10 18:37:44,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:37:44,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919617577] [2021-03-10 18:37:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:37:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:37:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:37:45,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919617577] [2021-03-10 18:37:45,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:37:45,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:37:45,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666285712] [2021-03-10 18:37:45,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:37:45,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:37:45,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:37:45,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:37:45,146 INFO L87 Difference]: Start difference. First operand 3334 states and 6839 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:46,446 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:37:46,668 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:37:46,995 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-03-10 18:37:47,208 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2021-03-10 18:37:47,418 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-03-10 18:37:47,619 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-03-10 18:37:47,826 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2021-03-10 18:37:48,036 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2021-03-10 18:37:48,229 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2021-03-10 18:37:48,467 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2021-03-10 18:37:48,723 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2021-03-10 18:37:48,947 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2021-03-10 18:37:49,189 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 79 [2021-03-10 18:37:49,588 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2021-03-10 18:37:50,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:37:50,592 INFO L93 Difference]: Finished difference Result 5280 states and 10861 transitions. [2021-03-10 18:37:50,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:37:50,593 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:37:50,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:37:50,597 INFO L225 Difference]: With dead ends: 5280 [2021-03-10 18:37:50,598 INFO L226 Difference]: Without dead ends: 5280 [2021-03-10 18:37:50,598 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 4676.5ms TimeCoverageRelationStatistics Valid=1026, Invalid=3134, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:37:50,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5280 states. [2021-03-10 18:37:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5280 to 3455. [2021-03-10 18:37:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 3452 states have (on average 2.055040556199305) internal successors, (7094), 3454 states have internal predecessors, (7094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 7094 transitions. [2021-03-10 18:37:50,642 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 7094 transitions. Word has length 82 [2021-03-10 18:37:50,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:37:50,643 INFO L480 AbstractCegarLoop]: Abstraction has 3455 states and 7094 transitions. [2021-03-10 18:37:50,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 7094 transitions. [2021-03-10 18:37:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:37:50,645 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:37:50,645 INFO L519 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] [2021-03-10 18:37:50,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-10 18:37:50,645 INFO L428 AbstractCegarLoop]: === Iteration 60 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:37:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:37:50,645 INFO L82 PathProgramCache]: Analyzing trace with hash -690714634, now seen corresponding path program 57 times [2021-03-10 18:37:50,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:37:50,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538221438] [2021-03-10 18:37:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:37:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:37:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:37:51,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538221438] [2021-03-10 18:37:51,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:37:51,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:37:51,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750395439] [2021-03-10 18:37:51,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:37:51,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:37:51,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:37:51,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:37:51,411 INFO L87 Difference]: Start difference. First operand 3455 states and 7094 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:52,483 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-03-10 18:37:52,824 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:37:53,062 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-03-10 18:37:53,271 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-03-10 18:37:53,496 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-03-10 18:37:53,732 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:37:53,930 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2021-03-10 18:37:54,170 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:37:54,378 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:37:54,590 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:37:54,811 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:37:54,997 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-03-10 18:37:55,227 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-03-10 18:37:55,470 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-03-10 18:37:55,741 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-03-10 18:37:55,980 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:37:56,185 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-03-10 18:37:56,462 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-03-10 18:37:56,729 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-03-10 18:37:56,957 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-03-10 18:37:57,184 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-03-10 18:37:57,434 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-03-10 18:37:57,679 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-03-10 18:37:57,969 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-03-10 18:37:58,296 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:37:58,613 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-03-10 18:37:59,062 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-03-10 18:37:59,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:37:59,421 INFO L93 Difference]: Finished difference Result 5236 states and 10782 transitions. [2021-03-10 18:37:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 18:37:59,422 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:37:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:37:59,427 INFO L225 Difference]: With dead ends: 5236 [2021-03-10 18:37:59,427 INFO L226 Difference]: Without dead ends: 5236 [2021-03-10 18:37:59,427 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 7117.7ms TimeCoverageRelationStatistics Valid=1351, Invalid=3205, Unknown=0, NotChecked=0, Total=4556 [2021-03-10 18:37:59,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236 states. [2021-03-10 18:37:59,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 3361. [2021-03-10 18:37:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3361 states, 3358 states have (on average 2.053603335318642) internal successors, (6896), 3360 states have internal predecessors, (6896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:59,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 6896 transitions. [2021-03-10 18:37:59,461 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 6896 transitions. Word has length 82 [2021-03-10 18:37:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:37:59,461 INFO L480 AbstractCegarLoop]: Abstraction has 3361 states and 6896 transitions. [2021-03-10 18:37:59,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:37:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 6896 transitions. [2021-03-10 18:37:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:37:59,463 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:37:59,463 INFO L519 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] [2021-03-10 18:37:59,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-10 18:37:59,463 INFO L428 AbstractCegarLoop]: === Iteration 61 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:37:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:37:59,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1704938128, now seen corresponding path program 58 times [2021-03-10 18:37:59,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:37:59,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975378580] [2021-03-10 18:37:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:37:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:38:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:38:00,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975378580] [2021-03-10 18:38:00,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:38:00,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:38:00,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949009655] [2021-03-10 18:38:00,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:38:00,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:38:00,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:38:00,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:38:00,073 INFO L87 Difference]: Start difference. First operand 3361 states and 6896 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:01,141 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-03-10 18:38:01,367 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-03-10 18:38:01,622 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2021-03-10 18:38:01,770 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-10 18:38:01,959 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2021-03-10 18:38:02,159 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 66 [2021-03-10 18:38:02,336 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-03-10 18:38:02,557 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-03-10 18:38:02,740 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-03-10 18:38:02,944 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2021-03-10 18:38:03,126 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-03-10 18:38:03,315 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-03-10 18:38:03,542 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-03-10 18:38:03,745 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-03-10 18:38:03,964 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-03-10 18:38:04,171 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-03-10 18:38:04,385 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-03-10 18:38:04,607 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-03-10 18:38:04,839 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 75 [2021-03-10 18:38:05,046 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-03-10 18:38:05,302 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-03-10 18:38:05,526 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-03-10 18:38:05,757 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-03-10 18:38:05,976 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 72 [2021-03-10 18:38:06,211 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-03-10 18:38:06,424 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-03-10 18:38:06,707 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 82 [2021-03-10 18:38:07,007 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2021-03-10 18:38:07,233 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-03-10 18:38:07,509 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2021-03-10 18:38:07,779 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-03-10 18:38:08,028 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-03-10 18:38:08,337 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 84 [2021-03-10 18:38:08,671 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 87 [2021-03-10 18:38:08,955 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-03-10 18:38:09,354 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2021-03-10 18:38:09,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:38:09,858 INFO L93 Difference]: Finished difference Result 4684 states and 9618 transitions. [2021-03-10 18:38:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 18:38:09,859 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:38:09,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:38:09,863 INFO L225 Difference]: With dead ends: 4684 [2021-03-10 18:38:09,863 INFO L226 Difference]: Without dead ends: 4684 [2021-03-10 18:38:09,864 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 8536.9ms TimeCoverageRelationStatistics Valid=1758, Invalid=4094, Unknown=0, NotChecked=0, Total=5852 [2021-03-10 18:38:09,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2021-03-10 18:38:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 3184. [2021-03-10 18:38:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 3181 states have (on average 2.0518704809808237) internal successors, (6527), 3183 states have internal predecessors, (6527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 6527 transitions. [2021-03-10 18:38:09,893 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 6527 transitions. Word has length 82 [2021-03-10 18:38:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:38:09,893 INFO L480 AbstractCegarLoop]: Abstraction has 3184 states and 6527 transitions. [2021-03-10 18:38:09,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 6527 transitions. [2021-03-10 18:38:09,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:38:09,896 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:38:09,896 INFO L519 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] [2021-03-10 18:38:09,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-10 18:38:09,896 INFO L428 AbstractCegarLoop]: === Iteration 62 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:38:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:38:09,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2113852904, now seen corresponding path program 59 times [2021-03-10 18:38:09,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:38:09,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013998217] [2021-03-10 18:38:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:38:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:38:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:38:10,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013998217] [2021-03-10 18:38:10,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:38:10,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:38:10,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486668403] [2021-03-10 18:38:10,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:38:10,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:38:10,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:38:10,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:38:10,691 INFO L87 Difference]: Start difference. First operand 3184 states and 6527 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:11,883 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:38:12,233 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-03-10 18:38:12,529 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2021-03-10 18:38:12,733 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2021-03-10 18:38:12,937 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2021-03-10 18:38:13,135 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:38:13,342 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2021-03-10 18:38:13,550 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2021-03-10 18:38:13,747 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-03-10 18:38:13,990 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2021-03-10 18:38:14,240 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2021-03-10 18:38:14,455 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2021-03-10 18:38:14,675 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2021-03-10 18:38:15,072 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 82 [2021-03-10 18:38:16,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:38:16,109 INFO L93 Difference]: Finished difference Result 4734 states and 9721 transitions. [2021-03-10 18:38:16,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:38:16,110 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:38:16,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:38:16,114 INFO L225 Difference]: With dead ends: 4734 [2021-03-10 18:38:16,114 INFO L226 Difference]: Without dead ends: 4734 [2021-03-10 18:38:16,115 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 4754.8ms TimeCoverageRelationStatistics Valid=1026, Invalid=3134, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:38:16,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2021-03-10 18:38:16,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 3341. [2021-03-10 18:38:16,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3341 states, 3338 states have (on average 2.054523666866387) internal successors, (6858), 3340 states have internal predecessors, (6858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:16,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3341 states to 3341 states and 6858 transitions. [2021-03-10 18:38:16,150 INFO L78 Accepts]: Start accepts. Automaton has 3341 states and 6858 transitions. Word has length 82 [2021-03-10 18:38:16,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:38:16,150 INFO L480 AbstractCegarLoop]: Abstraction has 3341 states and 6858 transitions. [2021-03-10 18:38:16,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:16,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3341 states and 6858 transitions. [2021-03-10 18:38:16,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:38:16,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:38:16,166 INFO L519 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] [2021-03-10 18:38:16,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-10 18:38:16,166 INFO L428 AbstractCegarLoop]: === Iteration 63 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:38:16,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:38:16,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1304494430, now seen corresponding path program 60 times [2021-03-10 18:38:16,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:38:16,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418583790] [2021-03-10 18:38:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:38:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:38:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:38:16,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418583790] [2021-03-10 18:38:16,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:38:16,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:38:16,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643500559] [2021-03-10 18:38:16,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:38:16,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:38:16,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:38:16,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:38:16,807 INFO L87 Difference]: Start difference. First operand 3341 states and 6858 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:17,796 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-03-10 18:38:17,983 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2021-03-10 18:38:18,338 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-03-10 18:38:18,654 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:38:18,889 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:38:19,104 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-10 18:38:19,324 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:38:19,551 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-03-10 18:38:19,793 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-03-10 18:38:20,030 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-03-10 18:38:20,259 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:38:20,520 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-03-10 18:38:20,784 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-03-10 18:38:21,018 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-03-10 18:38:21,236 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-03-10 18:38:21,487 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-03-10 18:38:21,733 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-03-10 18:38:22,010 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-03-10 18:38:22,316 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:38:22,635 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-03-10 18:38:23,088 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-03-10 18:38:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:38:23,424 INFO L93 Difference]: Finished difference Result 4717 states and 9702 transitions. [2021-03-10 18:38:23,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-10 18:38:23,424 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:38:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:38:23,428 INFO L225 Difference]: With dead ends: 4717 [2021-03-10 18:38:23,428 INFO L226 Difference]: Without dead ends: 4717 [2021-03-10 18:38:23,429 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 5871.3ms TimeCoverageRelationStatistics Valid=1093, Invalid=2689, Unknown=0, NotChecked=0, Total=3782 [2021-03-10 18:38:23,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4717 states. [2021-03-10 18:38:23,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4717 to 3385. [2021-03-10 18:38:23,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 3382 states have (on average 2.054997043169722) internal successors, (6950), 3384 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 6950 transitions. [2021-03-10 18:38:23,459 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 6950 transitions. Word has length 82 [2021-03-10 18:38:23,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:38:23,459 INFO L480 AbstractCegarLoop]: Abstraction has 3385 states and 6950 transitions. [2021-03-10 18:38:23,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 6950 transitions. [2021-03-10 18:38:23,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:38:23,461 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:38:23,461 INFO L519 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] [2021-03-10 18:38:23,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-10 18:38:23,462 INFO L428 AbstractCegarLoop]: === Iteration 64 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:38:23,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:38:23,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1976249372, now seen corresponding path program 61 times [2021-03-10 18:38:23,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:38:23,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167004558] [2021-03-10 18:38:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:38:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:38:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:38:24,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167004558] [2021-03-10 18:38:24,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:38:24,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:38:24,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721557352] [2021-03-10 18:38:24,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:38:24,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:38:24,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:38:24,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:38:24,081 INFO L87 Difference]: Start difference. First operand 3385 states and 6950 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:25,124 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-03-10 18:38:25,341 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2021-03-10 18:38:25,518 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-03-10 18:38:25,770 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2021-03-10 18:38:25,930 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2021-03-10 18:38:26,126 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2021-03-10 18:38:26,333 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 66 [2021-03-10 18:38:26,516 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-03-10 18:38:26,745 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-03-10 18:38:26,927 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2021-03-10 18:38:27,134 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2021-03-10 18:38:27,320 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-03-10 18:38:27,518 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-03-10 18:38:27,739 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2021-03-10 18:38:27,940 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-03-10 18:38:28,153 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-03-10 18:38:28,363 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-03-10 18:38:28,574 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-03-10 18:38:28,793 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:38:29,015 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 75 [2021-03-10 18:38:29,224 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-03-10 18:38:29,477 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-03-10 18:38:29,716 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-03-10 18:38:29,939 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-03-10 18:38:30,153 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 72 [2021-03-10 18:38:30,386 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-03-10 18:38:30,596 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-03-10 18:38:30,866 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 82 [2021-03-10 18:38:31,148 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2021-03-10 18:38:31,374 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-03-10 18:38:31,658 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2021-03-10 18:38:31,927 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-03-10 18:38:32,174 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-03-10 18:38:32,469 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 84 [2021-03-10 18:38:32,797 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 87 [2021-03-10 18:38:33,078 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-03-10 18:38:33,464 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2021-03-10 18:38:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:38:33,919 INFO L93 Difference]: Finished difference Result 4579 states and 9408 transitions. [2021-03-10 18:38:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-03-10 18:38:33,920 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:38:33,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:38:33,936 INFO L225 Difference]: With dead ends: 4579 [2021-03-10 18:38:33,936 INFO L226 Difference]: Without dead ends: 4579 [2021-03-10 18:38:33,936 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 8807.9ms TimeCoverageRelationStatistics Valid=1801, Invalid=4205, Unknown=0, NotChecked=0, Total=6006 [2021-03-10 18:38:33,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2021-03-10 18:38:33,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 3238. [2021-03-10 18:38:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 3235 states have (on average 2.052859350850077) internal successors, (6641), 3237 states have internal predecessors, (6641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 6641 transitions. [2021-03-10 18:38:33,974 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 6641 transitions. Word has length 82 [2021-03-10 18:38:33,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:38:33,975 INFO L480 AbstractCegarLoop]: Abstraction has 3238 states and 6641 transitions. [2021-03-10 18:38:33,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:33,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 6641 transitions. [2021-03-10 18:38:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:38:33,977 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:38:33,978 INFO L519 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] [2021-03-10 18:38:33,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-10 18:38:33,978 INFO L428 AbstractCegarLoop]: === Iteration 65 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:38:33,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:38:33,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1075163134, now seen corresponding path program 62 times [2021-03-10 18:38:33,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:38:33,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465518453] [2021-03-10 18:38:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:38:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:38:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:38:34,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465518453] [2021-03-10 18:38:34,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:38:34,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:38:34,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724725811] [2021-03-10 18:38:34,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:38:34,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:38:34,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:38:34,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:38:34,777 INFO L87 Difference]: Start difference. First operand 3238 states and 6641 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:35,654 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2021-03-10 18:38:35,831 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-03-10 18:38:36,033 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 60 [2021-03-10 18:38:36,215 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2021-03-10 18:38:36,434 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-03-10 18:38:36,639 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-03-10 18:38:36,807 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-03-10 18:38:37,013 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-03-10 18:38:37,221 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-03-10 18:38:37,413 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2021-03-10 18:38:37,642 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-03-10 18:38:37,831 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-03-10 18:38:38,036 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2021-03-10 18:38:38,236 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-03-10 18:38:38,453 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-03-10 18:38:38,660 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-03-10 18:38:38,907 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 71 [2021-03-10 18:38:39,131 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 70 [2021-03-10 18:38:39,360 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-03-10 18:38:39,583 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-03-10 18:38:39,817 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 74 [2021-03-10 18:38:40,055 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2021-03-10 18:38:40,303 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 76 [2021-03-10 18:38:40,556 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2021-03-10 18:38:40,843 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 79 [2021-03-10 18:38:41,089 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2021-03-10 18:38:41,328 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-03-10 18:38:41,566 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 73 [2021-03-10 18:38:41,821 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-03-10 18:38:42,060 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-03-10 18:38:42,358 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 81 [2021-03-10 18:38:42,679 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2021-03-10 18:38:42,932 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2021-03-10 18:38:43,226 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 82 [2021-03-10 18:38:43,512 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 80 [2021-03-10 18:38:43,787 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 86 [2021-03-10 18:38:44,109 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 88 [2021-03-10 18:38:44,456 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 91 [2021-03-10 18:38:44,815 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 85 [2021-03-10 18:38:45,273 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 90 [2021-03-10 18:38:45,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:38:45,598 INFO L93 Difference]: Finished difference Result 4335 states and 8888 transitions. [2021-03-10 18:38:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-10 18:38:45,599 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:38:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:38:45,603 INFO L225 Difference]: With dead ends: 4335 [2021-03-10 18:38:45,603 INFO L226 Difference]: Without dead ends: 4335 [2021-03-10 18:38:45,603 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 10065.9ms TimeCoverageRelationStatistics Valid=1888, Invalid=4592, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 18:38:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2021-03-10 18:38:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 2859. [2021-03-10 18:38:45,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2856 states have (on average 2.0518207282913163) internal successors, (5860), 2858 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 5860 transitions. [2021-03-10 18:38:45,629 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 5860 transitions. Word has length 82 [2021-03-10 18:38:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:38:45,629 INFO L480 AbstractCegarLoop]: Abstraction has 2859 states and 5860 transitions. [2021-03-10 18:38:45,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:45,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 5860 transitions. [2021-03-10 18:38:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:38:45,631 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:38:45,632 INFO L519 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] [2021-03-10 18:38:45,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-10 18:38:45,632 INFO L428 AbstractCegarLoop]: === Iteration 66 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:38:45,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:38:45,632 INFO L82 PathProgramCache]: Analyzing trace with hash -356923416, now seen corresponding path program 63 times [2021-03-10 18:38:45,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:38:45,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826915639] [2021-03-10 18:38:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:38:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:38:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:38:46,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826915639] [2021-03-10 18:38:46,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:38:46,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:38:46,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266840131] [2021-03-10 18:38:46,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:38:46,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:38:46,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:38:46,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:38:46,212 INFO L87 Difference]: Start difference. First operand 2859 states and 5860 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:47,117 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2021-03-10 18:38:47,265 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-03-10 18:38:47,460 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2021-03-10 18:38:47,688 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2021-03-10 18:38:47,978 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-03-10 18:38:48,235 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-03-10 18:38:48,479 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-03-10 18:38:48,718 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-03-10 18:38:48,936 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-03-10 18:38:49,148 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 76 [2021-03-10 18:38:49,397 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 76 [2021-03-10 18:38:49,626 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-03-10 18:38:49,873 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2021-03-10 18:38:50,086 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-03-10 18:38:50,353 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-03-10 18:38:50,596 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-03-10 18:38:50,830 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-03-10 18:38:51,069 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-03-10 18:38:51,330 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-03-10 18:38:51,565 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-03-10 18:38:51,986 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-03-10 18:38:53,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:38:53,009 INFO L93 Difference]: Finished difference Result 4205 states and 8636 transitions. [2021-03-10 18:38:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 18:38:53,010 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:38:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:38:53,014 INFO L225 Difference]: With dead ends: 4205 [2021-03-10 18:38:53,014 INFO L226 Difference]: Without dead ends: 4205 [2021-03-10 18:38:53,014 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 5976.5ms TimeCoverageRelationStatistics Valid=1229, Invalid=3601, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 18:38:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2021-03-10 18:38:53,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 3097. [2021-03-10 18:38:53,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 3094 states have (on average 2.0549450549450547) internal successors, (6358), 3096 states have internal predecessors, (6358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:53,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 6358 transitions. [2021-03-10 18:38:53,042 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 6358 transitions. Word has length 82 [2021-03-10 18:38:53,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:38:53,043 INFO L480 AbstractCegarLoop]: Abstraction has 3097 states and 6358 transitions. [2021-03-10 18:38:53,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:53,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 6358 transitions. [2021-03-10 18:38:53,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:38:53,044 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:38:53,044 INFO L519 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] [2021-03-10 18:38:53,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-10 18:38:53,045 INFO L428 AbstractCegarLoop]: === Iteration 67 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:38:53,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:38:53,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1454544416, now seen corresponding path program 64 times [2021-03-10 18:38:53,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:38:53,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243868159] [2021-03-10 18:38:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:38:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:38:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:38:53,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243868159] [2021-03-10 18:38:53,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:38:53,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:38:53,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138108265] [2021-03-10 18:38:53,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:38:53,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:38:53,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:38:53,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:38:53,877 INFO L87 Difference]: Start difference. First operand 3097 states and 6358 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:38:54,777 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2021-03-10 18:38:54,931 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2021-03-10 18:38:55,134 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-03-10 18:38:55,370 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-03-10 18:38:55,668 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 64 [2021-03-10 18:38:55,941 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 70 [2021-03-10 18:38:56,215 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2021-03-10 18:38:56,485 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 73 [2021-03-10 18:38:56,729 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-03-10 18:38:56,987 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 75 [2021-03-10 18:38:57,247 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 78 [2021-03-10 18:38:57,514 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 78 [2021-03-10 18:38:57,797 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 80 [2021-03-10 18:38:58,033 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2021-03-10 18:38:58,353 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 83 [2021-03-10 18:38:58,615 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-03-10 18:38:58,869 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2021-03-10 18:38:59,124 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-03-10 18:38:59,409 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 86 [2021-03-10 18:38:59,708 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-03-10 18:38:59,997 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 88 [2021-03-10 18:39:00,347 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 91 [2021-03-10 18:39:00,652 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 85 [2021-03-10 18:39:01,116 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 90 [2021-03-10 18:39:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:39:01,535 INFO L93 Difference]: Finished difference Result 4204 states and 8633 transitions. [2021-03-10 18:39:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:39:01,536 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:39:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:39:01,540 INFO L225 Difference]: With dead ends: 4204 [2021-03-10 18:39:01,540 INFO L226 Difference]: Without dead ends: 4204 [2021-03-10 18:39:01,540 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 7038.7ms TimeCoverageRelationStatistics Valid=1193, Invalid=2967, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:39:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-03-10 18:39:01,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3259. [2021-03-10 18:39:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3259 states, 3256 states have (on average 2.055896805896806) internal successors, (6694), 3258 states have internal predecessors, (6694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 6694 transitions. [2021-03-10 18:39:01,573 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 6694 transitions. Word has length 82 [2021-03-10 18:39:01,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:39:01,573 INFO L480 AbstractCegarLoop]: Abstraction has 3259 states and 6694 transitions. [2021-03-10 18:39:01,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:01,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 6694 transitions. [2021-03-10 18:39:01,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:39:01,575 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:39:01,575 INFO L519 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] [2021-03-10 18:39:01,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-10 18:39:01,575 INFO L428 AbstractCegarLoop]: === Iteration 68 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:39:01,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:39:01,575 INFO L82 PathProgramCache]: Analyzing trace with hash -588951704, now seen corresponding path program 65 times [2021-03-10 18:39:01,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:39:01,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982280968] [2021-03-10 18:39:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:39:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:39:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:39:02,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982280968] [2021-03-10 18:39:02,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:39:02,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:39:02,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112352107] [2021-03-10 18:39:02,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:39:02,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:39:02,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:39:02,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:39:02,186 INFO L87 Difference]: Start difference. First operand 3259 states and 6694 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:03,254 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-03-10 18:39:03,456 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2021-03-10 18:39:03,689 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2021-03-10 18:39:03,900 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2021-03-10 18:39:04,147 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-03-10 18:39:04,365 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2021-03-10 18:39:04,589 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-03-10 18:39:04,783 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-03-10 18:39:05,039 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2021-03-10 18:39:05,237 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:39:05,477 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-03-10 18:39:05,691 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2021-03-10 18:39:05,934 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 75 [2021-03-10 18:39:06,175 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-03-10 18:39:06,367 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:39:06,624 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2021-03-10 18:39:06,881 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 82 [2021-03-10 18:39:07,100 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-03-10 18:39:07,377 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 81 [2021-03-10 18:39:07,616 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-03-10 18:39:07,834 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-03-10 18:39:08,165 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 84 [2021-03-10 18:39:08,456 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-03-10 18:39:08,715 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-03-10 18:39:08,973 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 84 [2021-03-10 18:39:09,267 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 88 [2021-03-10 18:39:09,596 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2021-03-10 18:39:09,888 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 90 [2021-03-10 18:39:10,238 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 93 [2021-03-10 18:39:10,592 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 87 [2021-03-10 18:39:11,101 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 92 [2021-03-10 18:39:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:39:11,497 INFO L93 Difference]: Finished difference Result 4324 states and 8883 transitions. [2021-03-10 18:39:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 18:39:11,498 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:39:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:39:11,502 INFO L225 Difference]: With dead ends: 4324 [2021-03-10 18:39:11,502 INFO L226 Difference]: Without dead ends: 4324 [2021-03-10 18:39:11,502 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 8146.5ms TimeCoverageRelationStatistics Valid=1518, Invalid=3594, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 18:39:11,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4324 states. [2021-03-10 18:39:11,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4324 to 2927. [2021-03-10 18:39:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2924 states have (on average 2.0526675786593707) internal successors, (6002), 2926 states have internal predecessors, (6002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 6002 transitions. [2021-03-10 18:39:11,542 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 6002 transitions. Word has length 82 [2021-03-10 18:39:11,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:39:11,542 INFO L480 AbstractCegarLoop]: Abstraction has 2927 states and 6002 transitions. [2021-03-10 18:39:11,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 6002 transitions. [2021-03-10 18:39:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:39:11,544 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:39:11,544 INFO L519 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] [2021-03-10 18:39:11,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-10 18:39:11,544 INFO L428 AbstractCegarLoop]: === Iteration 69 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:39:11,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:39:11,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1686246306, now seen corresponding path program 66 times [2021-03-10 18:39:11,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:39:11,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813989826] [2021-03-10 18:39:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:39:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:39:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:39:12,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813989826] [2021-03-10 18:39:12,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:39:12,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:39:12,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132884493] [2021-03-10 18:39:12,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:39:12,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:39:12,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:39:12,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:39:12,176 INFO L87 Difference]: Start difference. First operand 2927 states and 6002 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:13,110 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2021-03-10 18:39:13,259 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2021-03-10 18:39:13,459 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2021-03-10 18:39:13,697 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2021-03-10 18:39:13,910 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2021-03-10 18:39:14,160 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-03-10 18:39:14,390 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2021-03-10 18:39:14,581 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2021-03-10 18:39:14,798 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-03-10 18:39:14,995 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-03-10 18:39:15,251 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 70 [2021-03-10 18:39:15,454 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:39:15,706 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-03-10 18:39:15,925 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2021-03-10 18:39:16,158 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-03-10 18:39:16,387 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-03-10 18:39:16,595 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:39:16,848 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-03-10 18:39:17,092 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2021-03-10 18:39:17,318 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-03-10 18:39:17,568 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-03-10 18:39:17,789 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-03-10 18:39:18,005 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-03-10 18:39:18,288 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-03-10 18:39:18,579 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2021-03-10 18:39:18,819 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-03-10 18:39:19,067 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-03-10 18:39:19,346 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-03-10 18:39:19,625 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-03-10 18:39:19,912 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2021-03-10 18:39:20,240 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2021-03-10 18:39:20,575 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-03-10 18:39:21,063 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2021-03-10 18:39:21,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:39:21,423 INFO L93 Difference]: Finished difference Result 4158 states and 8532 transitions. [2021-03-10 18:39:21,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 18:39:21,424 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:39:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:39:21,428 INFO L225 Difference]: With dead ends: 4158 [2021-03-10 18:39:21,428 INFO L226 Difference]: Without dead ends: 4158 [2021-03-10 18:39:21,428 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 8153.6ms TimeCoverageRelationStatistics Valid=1541, Invalid=3715, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 18:39:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2021-03-10 18:39:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 2861. [2021-03-10 18:39:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 2858 states have (on average 2.0517844646606016) internal successors, (5864), 2860 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 5864 transitions. [2021-03-10 18:39:21,454 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 5864 transitions. Word has length 82 [2021-03-10 18:39:21,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:39:21,454 INFO L480 AbstractCegarLoop]: Abstraction has 2861 states and 5864 transitions. [2021-03-10 18:39:21,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:21,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 5864 transitions. [2021-03-10 18:39:21,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:39:21,456 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:39:21,456 INFO L519 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] [2021-03-10 18:39:21,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-10 18:39:21,456 INFO L428 AbstractCegarLoop]: === Iteration 70 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:39:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:39:21,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1203345580, now seen corresponding path program 67 times [2021-03-10 18:39:21,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:39:21,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595804450] [2021-03-10 18:39:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:39:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:39:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:39:22,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595804450] [2021-03-10 18:39:22,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:39:22,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:39:22,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673235309] [2021-03-10 18:39:22,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:39:22,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:39:22,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:39:22,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:39:22,047 INFO L87 Difference]: Start difference. First operand 2861 states and 5864 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:23,012 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2021-03-10 18:39:23,204 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2021-03-10 18:39:23,411 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2021-03-10 18:39:23,661 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2021-03-10 18:39:23,994 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-03-10 18:39:24,274 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 70 [2021-03-10 18:39:24,539 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-03-10 18:39:24,799 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-03-10 18:39:25,037 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-03-10 18:39:25,262 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 76 [2021-03-10 18:39:25,502 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-03-10 18:39:25,766 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-03-10 18:39:26,031 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-03-10 18:39:26,263 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-03-10 18:39:26,552 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-03-10 18:39:26,814 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 75 [2021-03-10 18:39:27,068 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-03-10 18:39:27,323 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-03-10 18:39:27,607 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-03-10 18:39:27,855 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-03-10 18:39:28,314 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-03-10 18:39:29,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:39:29,517 INFO L93 Difference]: Finished difference Result 3975 states and 8169 transitions. [2021-03-10 18:39:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 18:39:29,518 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:39:29,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:39:29,521 INFO L225 Difference]: With dead ends: 3975 [2021-03-10 18:39:29,521 INFO L226 Difference]: Without dead ends: 3975 [2021-03-10 18:39:29,521 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 6305.1ms TimeCoverageRelationStatistics Valid=1229, Invalid=3601, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 18:39:29,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2021-03-10 18:39:29,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3027. [2021-03-10 18:39:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3027 states, 3024 states have (on average 2.05489417989418) internal successors, (6214), 3026 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 6214 transitions. [2021-03-10 18:39:29,548 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 6214 transitions. Word has length 82 [2021-03-10 18:39:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:39:29,548 INFO L480 AbstractCegarLoop]: Abstraction has 3027 states and 6214 transitions. [2021-03-10 18:39:29,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 6214 transitions. [2021-03-10 18:39:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:39:29,549 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:39:29,549 INFO L519 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] [2021-03-10 18:39:29,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-10 18:39:29,550 INFO L428 AbstractCegarLoop]: === Iteration 71 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:39:29,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:39:29,550 INFO L82 PathProgramCache]: Analyzing trace with hash 105724580, now seen corresponding path program 68 times [2021-03-10 18:39:29,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:39:29,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780636085] [2021-03-10 18:39:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:39:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:39:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:39:30,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780636085] [2021-03-10 18:39:30,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:39:30,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:39:30,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365378076] [2021-03-10 18:39:30,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:39:30,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:39:30,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:39:30,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:39:30,446 INFO L87 Difference]: Start difference. First operand 3027 states and 6214 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:31,489 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2021-03-10 18:39:31,690 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 56 [2021-03-10 18:39:31,897 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-03-10 18:39:32,170 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-03-10 18:39:32,524 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2021-03-10 18:39:32,824 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2021-03-10 18:39:33,124 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 70 [2021-03-10 18:39:33,422 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 74 [2021-03-10 18:39:33,683 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2021-03-10 18:39:33,948 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 76 [2021-03-10 18:39:34,223 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 76 [2021-03-10 18:39:34,508 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 79 [2021-03-10 18:39:34,814 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 78 [2021-03-10 18:39:35,087 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2021-03-10 18:39:35,438 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 81 [2021-03-10 18:39:35,727 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2021-03-10 18:39:36,006 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-03-10 18:39:36,278 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 80 [2021-03-10 18:39:36,589 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 84 [2021-03-10 18:39:36,910 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 80 [2021-03-10 18:39:37,215 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 86 [2021-03-10 18:39:37,591 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 89 [2021-03-10 18:39:37,926 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 83 [2021-03-10 18:39:38,431 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 88 [2021-03-10 18:39:38,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:39:38,929 INFO L93 Difference]: Finished difference Result 3974 states and 8166 transitions. [2021-03-10 18:39:38,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:39:38,930 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:39:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:39:38,933 INFO L225 Difference]: With dead ends: 3974 [2021-03-10 18:39:38,933 INFO L226 Difference]: Without dead ends: 3974 [2021-03-10 18:39:38,933 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 7583.5ms TimeCoverageRelationStatistics Valid=1193, Invalid=2967, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:39:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3974 states. [2021-03-10 18:39:38,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3974 to 3135. [2021-03-10 18:39:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 3132 states have (on average 2.054916985951469) internal successors, (6436), 3134 states have internal predecessors, (6436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 6436 transitions. [2021-03-10 18:39:38,961 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 6436 transitions. Word has length 82 [2021-03-10 18:39:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:39:38,961 INFO L480 AbstractCegarLoop]: Abstraction has 3135 states and 6436 transitions. [2021-03-10 18:39:38,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 6436 transitions. [2021-03-10 18:39:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:39:38,963 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:39:38,963 INFO L519 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] [2021-03-10 18:39:38,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-10 18:39:38,963 INFO L428 AbstractCegarLoop]: === Iteration 72 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:39:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:39:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash 971317292, now seen corresponding path program 69 times [2021-03-10 18:39:38,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:39:38,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202344273] [2021-03-10 18:39:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:39:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:39:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:39:39,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202344273] [2021-03-10 18:39:39,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:39:39,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:39:39,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066923999] [2021-03-10 18:39:39,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:39:39,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:39:39,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:39:39,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:39:39,626 INFO L87 Difference]: Start difference. First operand 3135 states and 6436 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:40,609 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2021-03-10 18:39:40,786 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2021-03-10 18:39:40,975 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2021-03-10 18:39:41,223 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2021-03-10 18:39:41,554 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-03-10 18:39:41,834 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 70 [2021-03-10 18:39:42,093 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2021-03-10 18:39:42,356 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-03-10 18:39:42,612 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-03-10 18:39:42,847 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-03-10 18:39:43,101 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2021-03-10 18:39:43,355 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2021-03-10 18:39:43,582 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-03-10 18:39:43,845 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-03-10 18:39:44,083 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-03-10 18:39:44,403 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-03-10 18:39:44,694 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-03-10 18:39:44,957 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-03-10 18:39:45,209 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 82 [2021-03-10 18:39:45,505 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 86 [2021-03-10 18:39:45,828 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 80 [2021-03-10 18:39:46,105 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 88 [2021-03-10 18:39:46,443 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 91 [2021-03-10 18:39:46,797 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 85 [2021-03-10 18:39:47,323 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 90 [2021-03-10 18:39:47,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:39:47,755 INFO L93 Difference]: Finished difference Result 4003 states and 8224 transitions. [2021-03-10 18:39:47,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 18:39:47,756 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:39:47,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:39:47,759 INFO L225 Difference]: With dead ends: 4003 [2021-03-10 18:39:47,759 INFO L226 Difference]: Without dead ends: 4003 [2021-03-10 18:39:47,759 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 7027.0ms TimeCoverageRelationStatistics Valid=1208, Invalid=2952, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:39:47,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2021-03-10 18:39:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 2924. [2021-03-10 18:39:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2921 states have (on average 2.053064019171517) internal successors, (5997), 2923 states have internal predecessors, (5997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 5997 transitions. [2021-03-10 18:39:47,784 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 5997 transitions. Word has length 82 [2021-03-10 18:39:47,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:39:47,784 INFO L480 AbstractCegarLoop]: Abstraction has 2924 states and 5997 transitions. [2021-03-10 18:39:47,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:47,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 5997 transitions. [2021-03-10 18:39:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:39:47,786 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:39:47,786 INFO L519 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] [2021-03-10 18:39:47,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-10 18:39:47,786 INFO L428 AbstractCegarLoop]: === Iteration 73 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:39:47,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:39:47,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1048451994, now seen corresponding path program 70 times [2021-03-10 18:39:47,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:39:47,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973614816] [2021-03-10 18:39:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:39:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:39:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:39:48,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973614816] [2021-03-10 18:39:48,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:39:48,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:39:48,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184496900] [2021-03-10 18:39:48,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:39:48,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:39:48,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:39:48,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:39:48,447 INFO L87 Difference]: Start difference. First operand 2924 states and 5997 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:49,479 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2021-03-10 18:39:49,668 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2021-03-10 18:39:49,885 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 61 [2021-03-10 18:39:50,145 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2021-03-10 18:39:50,488 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-03-10 18:39:50,722 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2021-03-10 18:39:50,965 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-03-10 18:39:51,251 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 70 [2021-03-10 18:39:51,528 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-03-10 18:39:51,766 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2021-03-10 18:39:52,020 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-03-10 18:39:52,291 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2021-03-10 18:39:52,540 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2021-03-10 18:39:52,767 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-03-10 18:39:53,025 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-03-10 18:39:53,257 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-03-10 18:39:53,547 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2021-03-10 18:39:53,828 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 75 [2021-03-10 18:39:54,080 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-03-10 18:39:54,329 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-03-10 18:39:54,637 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-03-10 18:39:54,940 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 80 [2021-03-10 18:39:55,225 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2021-03-10 18:39:55,567 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2021-03-10 18:39:55,924 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-03-10 18:39:56,447 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2021-03-10 18:39:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:39:56,917 INFO L93 Difference]: Finished difference Result 4011 states and 8238 transitions. [2021-03-10 18:39:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-10 18:39:56,918 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:39:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:39:56,921 INFO L225 Difference]: With dead ends: 4011 [2021-03-10 18:39:56,921 INFO L226 Difference]: Without dead ends: 4011 [2021-03-10 18:39:56,921 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 7141.8ms TimeCoverageRelationStatistics Valid=1231, Invalid=3059, Unknown=0, NotChecked=0, Total=4290 [2021-03-10 18:39:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2021-03-10 18:39:56,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 2870. [2021-03-10 18:39:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2867 states have (on average 2.0519707010812698) internal successors, (5883), 2869 states have internal predecessors, (5883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:56,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 5883 transitions. [2021-03-10 18:39:56,958 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 5883 transitions. Word has length 82 [2021-03-10 18:39:56,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:39:56,958 INFO L480 AbstractCegarLoop]: Abstraction has 2870 states and 5883 transitions. [2021-03-10 18:39:56,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:56,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 5883 transitions. [2021-03-10 18:39:56,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:39:56,959 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:39:56,960 INFO L519 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] [2021-03-10 18:39:56,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-10 18:39:56,960 INFO L428 AbstractCegarLoop]: === Iteration 74 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:39:56,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:39:56,960 INFO L82 PathProgramCache]: Analyzing trace with hash -165287918, now seen corresponding path program 71 times [2021-03-10 18:39:56,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:39:56,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502495341] [2021-03-10 18:39:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:39:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:39:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:39:57,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502495341] [2021-03-10 18:39:57,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:39:57,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:39:57,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537484891] [2021-03-10 18:39:57,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:39:57,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:39:57,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:39:57,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:39:57,563 INFO L87 Difference]: Start difference. First operand 2870 states and 5883 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:39:58,719 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2021-03-10 18:39:59,072 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2021-03-10 18:39:59,230 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2021-03-10 18:39:59,519 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2021-03-10 18:40:00,074 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-03-10 18:40:00,347 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2021-03-10 18:40:00,498 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2021-03-10 18:40:00,665 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-03-10 18:40:00,808 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-03-10 18:40:00,950 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2021-03-10 18:40:01,144 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-03-10 18:40:01,437 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-03-10 18:40:01,593 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2021-03-10 18:40:01,772 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2021-03-10 18:40:01,943 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-03-10 18:40:02,112 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:40:02,292 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-10 18:40:02,459 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2021-03-10 18:40:02,624 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2021-03-10 18:40:02,805 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2021-03-10 18:40:03,034 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2021-03-10 18:40:03,215 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2021-03-10 18:40:03,379 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2021-03-10 18:40:03,582 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-03-10 18:40:03,768 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-03-10 18:40:04,001 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-03-10 18:40:04,166 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2021-03-10 18:40:04,376 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 69 [2021-03-10 18:40:04,592 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 79 [2021-03-10 18:40:04,813 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-10 18:40:05,027 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2021-03-10 18:40:05,239 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:40:05,507 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 75 [2021-03-10 18:40:05,692 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2021-03-10 18:40:05,927 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2021-03-10 18:40:06,178 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-10 18:40:06,427 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-10 18:40:06,696 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2021-03-10 18:40:06,964 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2021-03-10 18:40:07,218 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 79 [2021-03-10 18:40:07,460 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-03-10 18:40:07,764 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2021-03-10 18:40:08,019 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-03-10 18:40:08,277 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 77 [2021-03-10 18:40:08,520 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 76 [2021-03-10 18:40:08,785 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2021-03-10 18:40:09,043 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-10 18:40:09,369 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 85 [2021-03-10 18:40:09,698 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-03-10 18:40:09,959 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2021-03-10 18:40:10,277 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 88 [2021-03-10 18:40:10,587 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-03-10 18:40:10,877 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 92 [2021-03-10 18:40:11,231 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 94 [2021-03-10 18:40:11,607 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 95 [2021-03-10 18:40:11,975 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 91 [2021-03-10 18:40:12,461 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 94 [2021-03-10 18:40:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:40:12,777 INFO L93 Difference]: Finished difference Result 3757 states and 7695 transitions. [2021-03-10 18:40:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-03-10 18:40:12,778 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:40:12,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:40:12,781 INFO L225 Difference]: With dead ends: 3757 [2021-03-10 18:40:12,781 INFO L226 Difference]: Without dead ends: 3757 [2021-03-10 18:40:12,782 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1904 ImplicationChecksByTransitivity, 13800.4ms TimeCoverageRelationStatistics Valid=3334, Invalid=8222, Unknown=0, NotChecked=0, Total=11556 [2021-03-10 18:40:12,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2021-03-10 18:40:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 2874. [2021-03-10 18:40:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2871 states have (on average 2.0518982932776035) internal successors, (5891), 2873 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5891 transitions. [2021-03-10 18:40:12,806 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5891 transitions. Word has length 82 [2021-03-10 18:40:12,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:40:12,806 INFO L480 AbstractCegarLoop]: Abstraction has 2874 states and 5891 transitions. [2021-03-10 18:40:12,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5891 transitions. [2021-03-10 18:40:12,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:40:12,808 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:40:12,808 INFO L519 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] [2021-03-10 18:40:12,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-10 18:40:12,808 INFO L428 AbstractCegarLoop]: === Iteration 75 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:40:12,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:40:12,808 INFO L82 PathProgramCache]: Analyzing trace with hash -481407284, now seen corresponding path program 72 times [2021-03-10 18:40:12,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:40:12,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089376985] [2021-03-10 18:40:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:40:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:40:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:40:13,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089376985] [2021-03-10 18:40:13,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:40:13,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:40:13,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729742095] [2021-03-10 18:40:13,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:40:13,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:40:13,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:40:13,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:40:13,504 INFO L87 Difference]: Start difference. First operand 2874 states and 5891 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:14,685 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-10 18:40:14,931 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-03-10 18:40:15,119 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-03-10 18:40:15,314 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:40:15,532 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-03-10 18:40:15,736 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2021-03-10 18:40:15,909 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:40:16,129 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:40:16,359 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:40:16,560 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-03-10 18:40:16,772 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-03-10 18:40:17,003 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:40:17,246 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2021-03-10 18:40:17,459 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2021-03-10 18:40:17,697 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-10 18:40:17,964 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2021-03-10 18:40:18,271 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2021-03-10 18:40:18,520 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-03-10 18:40:18,910 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2021-03-10 18:40:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:40:20,309 INFO L93 Difference]: Finished difference Result 3724 states and 7633 transitions. [2021-03-10 18:40:20,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 18:40:20,310 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:40:20,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:40:20,313 INFO L225 Difference]: With dead ends: 3724 [2021-03-10 18:40:20,313 INFO L226 Difference]: Without dead ends: 3724 [2021-03-10 18:40:20,313 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 5959.8ms TimeCoverageRelationStatistics Valid=1209, Invalid=3483, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 18:40:20,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3724 states. [2021-03-10 18:40:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3724 to 2943. [2021-03-10 18:40:20,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2943 states, 2940 states have (on average 2.0510204081632653) internal successors, (6030), 2942 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 6030 transitions. [2021-03-10 18:40:20,338 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 6030 transitions. Word has length 82 [2021-03-10 18:40:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:40:20,338 INFO L480 AbstractCegarLoop]: Abstraction has 2943 states and 6030 transitions. [2021-03-10 18:40:20,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:20,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 6030 transitions. [2021-03-10 18:40:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:40:20,339 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:40:20,339 INFO L519 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] [2021-03-10 18:40:20,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-10 18:40:20,340 INFO L428 AbstractCegarLoop]: === Iteration 76 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:40:20,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:40:20,340 INFO L82 PathProgramCache]: Analyzing trace with hash 938437358, now seen corresponding path program 73 times [2021-03-10 18:40:20,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:40:20,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704710062] [2021-03-10 18:40:20,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:40:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:40:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:40:21,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704710062] [2021-03-10 18:40:21,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:40:21,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:40:21,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643102334] [2021-03-10 18:40:21,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:40:21,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:40:21,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:40:21,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:40:21,235 INFO L87 Difference]: Start difference. First operand 2943 states and 6030 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:22,449 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-10 18:40:22,705 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-03-10 18:40:22,901 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:40:23,101 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-10 18:40:23,326 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-10 18:40:23,499 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:40:23,699 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2021-03-10 18:40:23,882 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:40:24,117 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:40:24,330 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2021-03-10 18:40:24,549 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:40:24,753 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:40:24,966 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-03-10 18:40:25,168 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-03-10 18:40:25,388 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:40:25,639 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2021-03-10 18:40:25,859 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2021-03-10 18:40:26,078 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2021-03-10 18:40:26,292 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-03-10 18:40:26,531 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:40:26,813 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 79 [2021-03-10 18:40:27,093 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2021-03-10 18:40:27,390 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2021-03-10 18:40:27,644 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-03-10 18:40:28,017 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2021-03-10 18:40:29,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:40:29,318 INFO L93 Difference]: Finished difference Result 3862 states and 7922 transitions. [2021-03-10 18:40:29,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 18:40:29,319 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:40:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:40:29,322 INFO L225 Difference]: With dead ends: 3862 [2021-03-10 18:40:29,322 INFO L226 Difference]: Without dead ends: 3862 [2021-03-10 18:40:29,322 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 7243.2ms TimeCoverageRelationStatistics Valid=1442, Invalid=4108, Unknown=0, NotChecked=0, Total=5550 [2021-03-10 18:40:29,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3862 states. [2021-03-10 18:40:29,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3862 to 2954. [2021-03-10 18:40:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2951 states have (on average 2.0511690952219586) internal successors, (6053), 2953 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6053 transitions. [2021-03-10 18:40:29,347 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6053 transitions. Word has length 82 [2021-03-10 18:40:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:40:29,348 INFO L480 AbstractCegarLoop]: Abstraction has 2954 states and 6053 transitions. [2021-03-10 18:40:29,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6053 transitions. [2021-03-10 18:40:29,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:40:29,349 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:40:29,349 INFO L519 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] [2021-03-10 18:40:29,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-10 18:40:29,349 INFO L428 AbstractCegarLoop]: === Iteration 77 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:40:29,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:40:29,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1747795832, now seen corresponding path program 74 times [2021-03-10 18:40:29,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:40:29,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282520929] [2021-03-10 18:40:29,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:40:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:40:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:40:30,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282520929] [2021-03-10 18:40:30,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:40:30,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:40:30,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606769380] [2021-03-10 18:40:30,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:40:30,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:40:30,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:40:30,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:40:30,093 INFO L87 Difference]: Start difference. First operand 2954 states and 6053 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:31,016 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2021-03-10 18:40:31,236 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2021-03-10 18:40:31,466 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2021-03-10 18:40:31,681 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2021-03-10 18:40:31,881 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2021-03-10 18:40:32,104 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-03-10 18:40:32,286 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2021-03-10 18:40:32,479 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2021-03-10 18:40:32,675 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-03-10 18:40:32,918 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:40:33,137 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 67 [2021-03-10 18:40:33,351 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2021-03-10 18:40:33,574 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:40:33,805 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-03-10 18:40:34,036 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2021-03-10 18:40:34,278 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-03-10 18:40:34,501 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-03-10 18:40:34,767 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2021-03-10 18:40:35,013 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-03-10 18:40:35,251 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-03-10 18:40:35,482 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-03-10 18:40:35,739 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-03-10 18:40:36,065 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-03-10 18:40:36,371 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-03-10 18:40:36,616 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 75 [2021-03-10 18:40:36,908 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-03-10 18:40:37,193 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 80 [2021-03-10 18:40:37,468 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-03-10 18:40:37,793 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2021-03-10 18:40:38,151 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 84 [2021-03-10 18:40:38,501 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-03-10 18:40:38,994 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-03-10 18:40:39,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:40:39,392 INFO L93 Difference]: Finished difference Result 3806 states and 7803 transitions. [2021-03-10 18:40:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-10 18:40:39,393 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:40:39,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:40:39,397 INFO L225 Difference]: With dead ends: 3806 [2021-03-10 18:40:39,397 INFO L226 Difference]: Without dead ends: 3806 [2021-03-10 18:40:39,397 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 8464.0ms TimeCoverageRelationStatistics Valid=1526, Invalid=3586, Unknown=0, NotChecked=0, Total=5112 [2021-03-10 18:40:39,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2021-03-10 18:40:39,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3084. [2021-03-10 18:40:39,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3084 states, 3081 states have (on average 2.0522557611165206) internal successors, (6323), 3083 states have internal predecessors, (6323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3084 states to 3084 states and 6323 transitions. [2021-03-10 18:40:39,434 INFO L78 Accepts]: Start accepts. Automaton has 3084 states and 6323 transitions. Word has length 82 [2021-03-10 18:40:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:40:39,434 INFO L480 AbstractCegarLoop]: Abstraction has 3084 states and 6323 transitions. [2021-03-10 18:40:39,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 3084 states and 6323 transitions. [2021-03-10 18:40:39,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:40:39,436 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:40:39,437 INFO L519 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] [2021-03-10 18:40:39,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-10 18:40:39,437 INFO L428 AbstractCegarLoop]: === Iteration 78 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:40:39,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:40:39,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1923726638, now seen corresponding path program 75 times [2021-03-10 18:40:39,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:40:39,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043835151] [2021-03-10 18:40:39,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:40:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:40:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:40:40,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043835151] [2021-03-10 18:40:40,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:40:40,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:40:40,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770634477] [2021-03-10 18:40:40,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:40:40,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:40:40,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:40:40,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:40:40,187 INFO L87 Difference]: Start difference. First operand 3084 states and 6323 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:41,442 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-10 18:40:41,721 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:40:42,013 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:40:42,239 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-10 18:40:42,479 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2021-03-10 18:40:42,672 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-10 18:40:42,909 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-03-10 18:40:43,122 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-10 18:40:43,353 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-10 18:40:43,545 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-03-10 18:40:43,774 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2021-03-10 18:40:44,020 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2021-03-10 18:40:44,288 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-10 18:40:44,505 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-03-10 18:40:44,712 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2021-03-10 18:40:44,991 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 79 [2021-03-10 18:40:45,294 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2021-03-10 18:40:45,556 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2021-03-10 18:40:45,821 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-03-10 18:40:46,285 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2021-03-10 18:40:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:40:47,508 INFO L93 Difference]: Finished difference Result 4123 states and 8468 transitions. [2021-03-10 18:40:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-10 18:40:47,509 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:40:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:40:47,512 INFO L225 Difference]: With dead ends: 4123 [2021-03-10 18:40:47,512 INFO L226 Difference]: Without dead ends: 4123 [2021-03-10 18:40:47,513 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 6258.0ms TimeCoverageRelationStatistics Valid=1233, Invalid=3597, Unknown=0, NotChecked=0, Total=4830 [2021-03-10 18:40:47,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2021-03-10 18:40:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3132. [2021-03-10 18:40:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 3129 states have (on average 2.0520933205496963) internal successors, (6421), 3131 states have internal predecessors, (6421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:47,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 6421 transitions. [2021-03-10 18:40:47,540 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 6421 transitions. Word has length 82 [2021-03-10 18:40:47,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:40:47,540 INFO L480 AbstractCegarLoop]: Abstraction has 3132 states and 6421 transitions. [2021-03-10 18:40:47,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:47,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 6421 transitions. [2021-03-10 18:40:47,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:40:47,542 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:40:47,542 INFO L519 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] [2021-03-10 18:40:47,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-10 18:40:47,542 INFO L428 AbstractCegarLoop]: === Iteration 79 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:40:47,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:40:47,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1114368164, now seen corresponding path program 76 times [2021-03-10 18:40:47,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:40:47,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841290069] [2021-03-10 18:40:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:40:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:40:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:40:48,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841290069] [2021-03-10 18:40:48,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:40:48,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:40:48,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975868147] [2021-03-10 18:40:48,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:40:48,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:40:48,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:40:48,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:40:48,297 INFO L87 Difference]: Start difference. First operand 3132 states and 6421 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:49,225 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2021-03-10 18:40:49,444 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2021-03-10 18:40:49,672 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2021-03-10 18:40:49,837 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 59 [2021-03-10 18:40:50,025 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-03-10 18:40:50,223 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:40:50,450 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2021-03-10 18:40:50,637 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 63 [2021-03-10 18:40:50,842 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2021-03-10 18:40:51,043 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2021-03-10 18:40:51,288 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:40:51,508 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 67 [2021-03-10 18:40:51,745 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-03-10 18:40:51,971 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 72 [2021-03-10 18:40:52,206 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:40:52,427 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-03-10 18:40:52,674 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:40:52,904 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:40:53,177 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-03-10 18:40:53,428 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-03-10 18:40:53,675 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2021-03-10 18:40:53,928 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-10 18:40:54,190 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2021-03-10 18:40:54,527 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 81 [2021-03-10 18:40:54,831 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2021-03-10 18:40:55,087 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2021-03-10 18:40:55,393 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-03-10 18:40:55,685 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-03-10 18:40:55,965 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-03-10 18:40:56,320 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-03-10 18:40:56,686 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:40:57,047 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-03-10 18:40:57,546 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-03-10 18:40:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:40:57,927 INFO L93 Difference]: Finished difference Result 4181 states and 8580 transitions. [2021-03-10 18:40:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-10 18:40:57,928 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:40:57,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:40:57,932 INFO L225 Difference]: With dead ends: 4181 [2021-03-10 18:40:57,932 INFO L226 Difference]: Without dead ends: 4181 [2021-03-10 18:40:57,932 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 8855.9ms TimeCoverageRelationStatistics Valid=1571, Invalid=3685, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 18:40:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2021-03-10 18:40:57,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 3090. [2021-03-10 18:40:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3090 states, 3087 states have (on average 2.052154195011338) internal successors, (6335), 3089 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 6335 transitions. [2021-03-10 18:40:57,960 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 6335 transitions. Word has length 82 [2021-03-10 18:40:57,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:40:57,960 INFO L480 AbstractCegarLoop]: Abstraction has 3090 states and 6335 transitions. [2021-03-10 18:40:57,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:40:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 6335 transitions. [2021-03-10 18:40:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:40:57,962 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:40:57,962 INFO L519 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] [2021-03-10 18:40:57,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-10 18:40:57,962 INFO L428 AbstractCegarLoop]: === Iteration 80 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:40:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:40:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1023366772, now seen corresponding path program 77 times [2021-03-10 18:40:57,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:40:57,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699093882] [2021-03-10 18:40:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:40:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:40:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:40:58,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699093882] [2021-03-10 18:40:58,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:40:58,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-03-10 18:40:58,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011319] [2021-03-10 18:40:58,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:40:58,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:40:58,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:40:58,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:40:58,734 INFO L87 Difference]: Start difference. First operand 3090 states and 6335 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:41:00,018 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-10 18:41:00,302 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-10 18:41:00,566 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-10 18:41:00,909 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-03-10 18:41:01,150 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2021-03-10 18:41:01,386 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-03-10 18:41:01,612 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-03-10 18:41:01,852 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2021-03-10 18:41:02,084 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2021-03-10 18:41:02,301 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2021-03-10 18:41:02,574 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2021-03-10 18:41:02,866 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2021-03-10 18:41:03,121 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 77 [2021-03-10 18:41:03,375 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 79 [2021-03-10 18:41:03,845 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2021-03-10 18:41:05,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:41:05,138 INFO L93 Difference]: Finished difference Result 3979 states and 8168 transitions. [2021-03-10 18:41:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:41:05,139 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:41:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:41:05,142 INFO L225 Difference]: With dead ends: 3979 [2021-03-10 18:41:05,143 INFO L226 Difference]: Without dead ends: 3979 [2021-03-10 18:41:05,143 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 5291.1ms TimeCoverageRelationStatistics Valid=1024, Invalid=3136, Unknown=0, NotChecked=0, Total=4160 [2021-03-10 18:41:05,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-03-10 18:41:05,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3211. [2021-03-10 18:41:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3211 states, 3208 states have (on average 2.0542394014962593) internal successors, (6590), 3210 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:41:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 6590 transitions. [2021-03-10 18:41:05,170 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 6590 transitions. Word has length 82 [2021-03-10 18:41:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:41:05,170 INFO L480 AbstractCegarLoop]: Abstraction has 3211 states and 6590 transitions. [2021-03-10 18:41:05,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 27 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:41:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 6590 transitions. [2021-03-10 18:41:05,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:41:05,172 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:41:05,172 INFO L519 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] [2021-03-10 18:41:05,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-10 18:41:05,172 INFO L428 AbstractCegarLoop]: === Iteration 81 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:41:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:41:05,172 INFO L82 PathProgramCache]: Analyzing trace with hash -214008298, now seen corresponding path program 78 times [2021-03-10 18:41:05,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:41:05,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684876279] [2021-03-10 18:41:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:41:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:41:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:41:06,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684876279] [2021-03-10 18:41:06,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:41:06,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:41:06,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985738762] [2021-03-10 18:41:06,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:41:06,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:41:06,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:41:06,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:41:06,033 INFO L87 Difference]: Start difference. First operand 3211 states and 6590 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:41:07,037 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2021-03-10 18:41:07,336 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2021-03-10 18:41:07,591 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2021-03-10 18:41:07,759 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 59 [2021-03-10 18:41:07,955 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-03-10 18:41:08,165 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-10 18:41:08,359 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2021-03-10 18:41:08,589 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2021-03-10 18:41:08,782 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2021-03-10 18:41:08,997 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2021-03-10 18:41:09,200 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-03-10 18:41:09,461 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-10 18:41:09,702 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 67 [2021-03-10 18:41:09,939 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-03-10 18:41:10,172 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:41:10,416 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-03-10 18:41:10,641 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2021-03-10 18:41:10,892 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-03-10 18:41:11,124 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 72 [2021-03-10 18:41:11,400 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-03-10 18:41:11,653 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-03-10 18:41:11,904 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2021-03-10 18:41:12,147 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-03-10 18:41:12,411 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-03-10 18:41:12,745 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-03-10 18:41:13,053 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-03-10 18:41:13,303 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-03-10 18:41:13,612 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-03-10 18:41:13,903 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-03-10 18:41:14,189 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-03-10 18:41:14,538 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-03-10 18:41:14,912 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-03-10 18:41:15,276 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-03-10 18:41:15,781 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-03-10 18:41:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:41:16,208 INFO L93 Difference]: Finished difference Result 4049 states and 8316 transitions. [2021-03-10 18:41:16,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 18:41:16,209 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-03-10 18:41:16,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:41:16,212 INFO L225 Difference]: With dead ends: 4049 [2021-03-10 18:41:16,213 INFO L226 Difference]: Without dead ends: 4049 [2021-03-10 18:41:16,213 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 9184.8ms TimeCoverageRelationStatistics Valid=1613, Invalid=3789, Unknown=0, NotChecked=0, Total=5402 [2021-03-10 18:41:16,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4049 states. [2021-03-10 18:41:16,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4049 to 3117. [2021-03-10 18:41:16,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 3114 states have (on average 2.052665382145151) internal successors, (6392), 3116 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:41:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 6392 transitions. [2021-03-10 18:41:16,240 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 6392 transitions. Word has length 82 [2021-03-10 18:41:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:41:16,240 INFO L480 AbstractCegarLoop]: Abstraction has 3117 states and 6392 transitions. [2021-03-10 18:41:16,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:41:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 6392 transitions. [2021-03-10 18:41:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-03-10 18:41:16,242 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:41:16,242 INFO L519 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] [2021-03-10 18:41:16,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-10 18:41:16,242 INFO L428 AbstractCegarLoop]: === Iteration 82 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:41:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:41:16,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1228231792, now seen corresponding path program 79 times [2021-03-10 18:41:16,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:41:16,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808485847] [2021-03-10 18:41:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:41:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:41:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:41:17,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808485847] [2021-03-10 18:41:17,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:41:17,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-03-10 18:41:17,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806879380] [2021-03-10 18:41:17,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-03-10 18:41:17,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:41:17,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-03-10 18:41:17,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-03-10 18:41:17,285 INFO L87 Difference]: Start difference. First operand 3117 states and 6392 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 18:41:18,348 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2021-03-10 18:41:18,597 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2021-03-10 18:41:18,840 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2021-03-10 18:41:19,008 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 59 [2021-03-10 18:41:19,202 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-03-10 18:41:19,412 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2021-03-10 18:41:19,609 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2021-03-10 18:41:19,836 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-03-10 18:41:20,044 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2021-03-10 18:41:20,258 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2021-03-10 18:41:20,461 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-03-10 18:41:20,670 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-03-10 18:41:20,919 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-03-10 18:41:21,146 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 67 [2021-03-10 18:41:21,380 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-03-10 18:41:21,612 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 72 [2021-03-10 18:41:21,849 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-03-10 18:41:22,092 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2021-03-10 18:41:22,349 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 75 [2021-03-10 18:41:22,585 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2021-03-10 18:41:22,868 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-03-10 18:41:23,116 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 Received shutdown request... [2021-03-10 18:41:23,359 WARN L222 SmtUtils]: Removed 5 from assertion stack [2021-03-10 18:41:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-10 18:41:23,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-10 18:41:23,360 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 18:41:23,363 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 18:41:23,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 06:41:23 BasicIcfg [2021-03-10 18:41:23,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 18:41:23,364 INFO L168 Benchmark]: Toolchain (without parser) took 715234.50 ms. Allocated memory was 255.9 MB in the beginning and 914.4 MB in the end (delta: 658.5 MB). Free memory was 232.9 MB in the beginning and 620.3 MB in the end (delta: -387.4 MB). Peak memory consumption was 269.5 MB. Max. memory is 16.0 GB. [2021-03-10 18:41:23,364 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 255.9 MB. Free memory is still 237.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 18:41:23,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.46 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 232.4 MB in the beginning and 300.8 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-10 18:41:23,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.32 ms. Allocated memory is still 350.2 MB. Free memory was 300.8 MB in the beginning and 298.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 18:41:23,364 INFO L168 Benchmark]: Boogie Preprocessor took 30.16 ms. Allocated memory is still 350.2 MB. Free memory was 298.2 MB in the beginning and 296.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 18:41:23,364 INFO L168 Benchmark]: RCFGBuilder took 745.63 ms. Allocated memory is still 350.2 MB. Free memory was 296.7 MB in the beginning and 326.0 MB in the end (delta: -29.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.0 GB. [2021-03-10 18:41:23,364 INFO L168 Benchmark]: TraceAbstraction took 713782.57 ms. Allocated memory was 350.2 MB in the beginning and 914.4 MB in the end (delta: 564.1 MB). Free memory was 325.1 MB in the beginning and 620.3 MB in the end (delta: -295.2 MB). Peak memory consumption was 268.7 MB. Max. memory is 16.0 GB. [2021-03-10 18:41:23,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 255.9 MB. Free memory is still 237.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 619.46 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 232.4 MB in the beginning and 300.8 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.32 ms. Allocated memory is still 350.2 MB. Free memory was 300.8 MB in the beginning and 298.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.16 ms. Allocated memory is still 350.2 MB. Free memory was 298.2 MB in the beginning and 296.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 745.63 ms. Allocated memory is still 350.2 MB. Free memory was 296.7 MB in the beginning and 326.0 MB in the end (delta: -29.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 713782.57 ms. Allocated memory was 350.2 MB in the beginning and 914.4 MB in the end (delta: 564.1 MB). Free memory was 325.1 MB in the beginning and 620.3 MB in the end (delta: -295.2 MB). Peak memory consumption was 268.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 832]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable (line 832). Cancelled while BasicCegarLoop was constructing difference of abstraction (3117states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 110 for 189ms.. - TimeoutResultAtElement [Line: 836]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable (line 836). Cancelled while BasicCegarLoop was constructing difference of abstraction (3117states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 110 for 189ms.. - TimeoutResultAtElement [Line: 837]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable (line 837). Cancelled while BasicCegarLoop was constructing difference of abstraction (3117states) and FLOYD_HOARE automaton (currently 35 states, 26 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 110 for 189ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 130 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 713579.4ms, OverallIterations: 82, TraceHistogramMax: 1, EmptinessCheckTime: 238.9ms, AutomataDifference: 652181.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 118.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23577 SDtfs, 95052 SDslu, 272098 SDs, 0 SdLazy, 160391 SolverSat, 3408 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74154.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6112 GetRequests, 252 SyntacticMatches, 44 SemanticMatches, 5815 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65480 ImplicationChecksByTransitivity, 586239.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3455occurred in iteration=59, InterpolantAutomatonStates: 4067, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3462.7ms AutomataMinimizationTime, 81 MinimizatonAttempts, 95695 StatesRemovedByMinimization, 80 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 137.8ms SsaConstructionTime, 831.8ms SatisfiabilityAnalysisTime, 56049.1ms InterpolantComputationTime, 6608 NumberOfCodeBlocks, 6608 NumberOfCodeBlocksAsserted, 82 NumberOfCheckSat, 6526 ConstructedInterpolants, 0 QuantifiedInterpolants, 94589 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 82 InterpolantComputations, 82 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