/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 15:40:48,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 15:40:48,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 15:40:48,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 15:40:48,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 15:40:48,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 15:40:48,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 15:40:48,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 15:40:48,794 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 15:40:48,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 15:40:48,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 15:40:48,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 15:40:48,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 15:40:48,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 15:40:48,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 15:40:48,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 15:40:48,800 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 15:40:48,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 15:40:48,801 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 15:40:48,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 15:40:48,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 15:40:48,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 15:40:48,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 15:40:48,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 15:40:48,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 15:40:48,802 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 15:40:48,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 15:40:48,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 15:40:48,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 15:40:48,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 15:40:48,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 15:40:48,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 15:40:48,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 15:40:48,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:40:48,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 15:40:48,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 15:40:48,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 15:40:48,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 15:40:48,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 15:40:48,804 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 15:40:48,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 15:40:48,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 15:40:49,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 15:40:49,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 15:40:49,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 15:40:49,036 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 15:40:49,037 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 15:40:49,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-03-01 15:40:49,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aecb773/68892eee5e2c4dc285050a265124a1f4/FLAG8d0cfd3df [2022-03-01 15:40:49,459 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 15:40:49,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-03-01 15:40:49,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aecb773/68892eee5e2c4dc285050a265124a1f4/FLAG8d0cfd3df [2022-03-01 15:40:49,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aecb773/68892eee5e2c4dc285050a265124a1f4 [2022-03-01 15:40:49,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 15:40:49,478 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 15:40:49,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 15:40:49,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 15:40:49,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 15:40:49,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a739737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49, skipping insertion in model container [2022-03-01 15:40:49,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 15:40:49,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 15:40:49,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-03-01 15:40:49,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:40:49,735 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 15:40:49,767 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-03-01 15:40:49,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 15:40:49,781 INFO L208 MainTranslator]: Completed translation [2022-03-01 15:40:49,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49 WrapperNode [2022-03-01 15:40:49,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 15:40:49,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 15:40:49,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 15:40:49,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 15:40:49,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,825 INFO L137 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-03-01 15:40:49,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 15:40:49,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 15:40:49,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 15:40:49,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 15:40:49,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 15:40:49,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 15:40:49,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 15:40:49,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 15:40:49,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49" (1/1) ... [2022-03-01 15:40:49,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 15:40:49,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:40:49,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 15:40:49,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 15:40:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 15:40:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 15:40:49,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 15:40:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 15:40:49,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 15:40:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 15:40:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 15:40:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 15:40:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-01 15:40:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-01 15:40:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 15:40:49,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 15:40:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 15:40:49,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 15:40:49,931 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 15:40:49,997 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 15:40:49,998 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 15:40:50,156 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 15:40:50,175 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 15:40:50,175 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-01 15:40:50,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:40:50 BoogieIcfgContainer [2022-03-01 15:40:50,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 15:40:50,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 15:40:50,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 15:40:50,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 15:40:50,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 03:40:49" (1/3) ... [2022-03-01 15:40:50,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7cc4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:40:50, skipping insertion in model container [2022-03-01 15:40:50,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 03:40:49" (2/3) ... [2022-03-01 15:40:50,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7cc4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 03:40:50, skipping insertion in model container [2022-03-01 15:40:50,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 03:40:50" (3/3) ... [2022-03-01 15:40:50,184 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-03-01 15:40:50,187 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 15:40:50,187 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 15:40:50,188 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 15:40:50,188 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 15:40:50,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,229 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,229 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,229 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,229 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,231 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,231 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,231 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,232 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,232 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,232 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,235 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,236 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,236 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,236 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,236 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,238 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 15:40:50,243 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 15:40:50,281 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 15:40:50,288 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 15:40:50,288 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 15:40:50,303 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 104 transitions, 224 flow [2022-03-01 15:40:50,429 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:50,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:50,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-01 15:40:50,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:50,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:50,462 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:50,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash 91702260, now seen corresponding path program 1 times [2022-03-01 15:40:50,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:50,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301940706] [2022-03-01 15:40:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:50,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:40:50,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:50,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301940706] [2022-03-01 15:40:50,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301940706] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:50,699 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:50,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 15:40:50,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085863153] [2022-03-01 15:40:50,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:50,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 15:40:50,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 15:40:50,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 15:40:50,738 INFO L87 Difference]: Start difference. First operand has 636 states, 635 states have (on average 2.8) internal successors, (1778), 635 states have internal predecessors, (1778), 0 states have call successors, (0), 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 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:50,776 INFO L93 Difference]: Finished difference Result 636 states and 1679 transitions. [2022-03-01 15:40:50,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 15:40:50,780 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-03-01 15:40:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:50,796 INFO L225 Difference]: With dead ends: 636 [2022-03-01 15:40:50,796 INFO L226 Difference]: Without dead ends: 634 [2022-03-01 15:40:50,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 15:40:50,801 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:50,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:40:50,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-03-01 15:40:50,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2022-03-01 15:40:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 2.6492890995260665) internal successors, (1677), 633 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1677 transitions. [2022-03-01 15:40:50,916 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1677 transitions. Word has length 69 [2022-03-01 15:40:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:50,916 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 1677 transitions. [2022-03-01 15:40:50,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1677 transitions. [2022-03-01 15:40:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-01 15:40:50,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:50,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:50,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 15:40:50,921 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash -638556778, now seen corresponding path program 1 times [2022-03-01 15:40:50,922 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:50,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294484697] [2022-03-01 15:40:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:40:51,281 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:51,282 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294484697] [2022-03-01 15:40:51,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294484697] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:51,282 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:51,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-01 15:40:51,282 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548109229] [2022-03-01 15:40:51,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:51,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-01 15:40:51,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-01 15:40:51,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-01 15:40:51,285 INFO L87 Difference]: Start difference. First operand 634 states and 1677 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:51,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:51,400 INFO L93 Difference]: Finished difference Result 899 states and 2413 transitions. [2022-03-01 15:40:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 15:40:51,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-03-01 15:40:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:51,410 INFO L225 Difference]: With dead ends: 899 [2022-03-01 15:40:51,410 INFO L226 Difference]: Without dead ends: 848 [2022-03-01 15:40:51,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-01 15:40:51,412 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 76 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:51,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 324 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:40:51,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-03-01 15:40:51,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 689. [2022-03-01 15:40:51,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 2.627906976744186) internal successors, (1808), 688 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1808 transitions. [2022-03-01 15:40:51,442 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1808 transitions. Word has length 69 [2022-03-01 15:40:51,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:51,442 INFO L470 AbstractCegarLoop]: Abstraction has 689 states and 1808 transitions. [2022-03-01 15:40:51,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:51,443 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1808 transitions. [2022-03-01 15:40:51,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-01 15:40:51,445 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:51,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:51,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 15:40:51,446 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:51,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:51,446 INFO L85 PathProgramCache]: Analyzing trace with hash -849231512, now seen corresponding path program 1 times [2022-03-01 15:40:51,447 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:51,447 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662022308] [2022-03-01 15:40:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:51,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:40:51,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:51,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662022308] [2022-03-01 15:40:51,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662022308] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:51,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:51,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:40:51,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929683284] [2022-03-01 15:40:51,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:51,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:40:51,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:51,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:40:51,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:40:51,667 INFO L87 Difference]: Start difference. First operand 689 states and 1808 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:51,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:51,843 INFO L93 Difference]: Finished difference Result 1079 states and 2914 transitions. [2022-03-01 15:40:51,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 15:40:51,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-03-01 15:40:51,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:51,852 INFO L225 Difference]: With dead ends: 1079 [2022-03-01 15:40:51,853 INFO L226 Difference]: Without dead ends: 1046 [2022-03-01 15:40:51,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:40:51,859 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 168 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:51,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 276 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:40:51,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-03-01 15:40:51,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 656. [2022-03-01 15:40:51,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 2.645801526717557) internal successors, (1733), 655 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1733 transitions. [2022-03-01 15:40:51,885 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1733 transitions. Word has length 76 [2022-03-01 15:40:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:51,886 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 1733 transitions. [2022-03-01 15:40:51,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:51,887 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1733 transitions. [2022-03-01 15:40:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-01 15:40:51,891 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:51,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:51,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 15:40:51,892 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:51,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash -871538449, now seen corresponding path program 1 times [2022-03-01 15:40:51,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:51,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185076859] [2022-03-01 15:40:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:40:52,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:52,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185076859] [2022-03-01 15:40:52,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185076859] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:40:52,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042098687] [2022-03-01 15:40:52,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:52,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:40:52,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:40:52,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:40:52,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 15:40:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:52,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-01 15:40:52,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:40:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:40:52,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:40:54,799 WARN L838 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (let ((.cse0 (* 2 ~N~0))) (or (not (< (mod c_~i1~0 4294967296) (mod .cse0 4294967296))) (<= (+ c_~i2~0 (* 4294967296 (div .cse0 4294967296)) 1) (+ .cse0 (* (div c_~i2~0 4294967296) 4294967296)))))) is different from false [2022-03-01 15:40:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-03-01 15:40:55,058 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042098687] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:40:55,058 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:40:55,058 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-03-01 15:40:55,058 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053872590] [2022-03-01 15:40:55,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:40:55,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-01 15:40:55,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:55,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-01 15:40:55,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=91, Unknown=1, NotChecked=20, Total=156 [2022-03-01 15:40:55,060 INFO L87 Difference]: Start difference. First operand 656 states and 1733 transitions. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:55,331 INFO L93 Difference]: Finished difference Result 1525 states and 4125 transitions. [2022-03-01 15:40:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 15:40:55,332 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 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 76 [2022-03-01 15:40:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:55,340 INFO L225 Difference]: With dead ends: 1525 [2022-03-01 15:40:55,340 INFO L226 Difference]: Without dead ends: 1525 [2022-03-01 15:40:55,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=87, Invalid=156, Unknown=1, NotChecked=28, Total=272 [2022-03-01 15:40:55,341 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 420 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:55,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 516 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 141 Unchecked, 0.1s Time] [2022-03-01 15:40:55,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2022-03-01 15:40:55,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 727. [2022-03-01 15:40:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 726 states have (on average 2.6639118457300275) internal successors, (1934), 726 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1934 transitions. [2022-03-01 15:40:55,369 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1934 transitions. Word has length 76 [2022-03-01 15:40:55,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:55,369 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 1934 transitions. [2022-03-01 15:40:55,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:55,369 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1934 transitions. [2022-03-01 15:40:55,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-01 15:40:55,371 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:55,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:55,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-01 15:40:55,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:40:55,598 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:55,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash -83304769, now seen corresponding path program 2 times [2022-03-01 15:40:55,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:55,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626393018] [2022-03-01 15:40:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:55,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:40:55,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:55,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626393018] [2022-03-01 15:40:55,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626393018] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:55,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:55,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:40:55,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361125540] [2022-03-01 15:40:55,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:55,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:40:55,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:55,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:40:55,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:40:55,734 INFO L87 Difference]: Start difference. First operand 727 states and 1934 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:55,853 INFO L93 Difference]: Finished difference Result 1021 states and 2739 transitions. [2022-03-01 15:40:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 15:40:55,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-03-01 15:40:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:55,859 INFO L225 Difference]: With dead ends: 1021 [2022-03-01 15:40:55,859 INFO L226 Difference]: Without dead ends: 1009 [2022-03-01 15:40:55,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:40:55,860 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 183 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:55,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 265 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:40:55,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-03-01 15:40:55,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 715. [2022-03-01 15:40:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 2.6624649859943976) internal successors, (1901), 714 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:55,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1901 transitions. [2022-03-01 15:40:55,883 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1901 transitions. Word has length 76 [2022-03-01 15:40:55,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:55,884 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 1901 transitions. [2022-03-01 15:40:55,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:55,884 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1901 transitions. [2022-03-01 15:40:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-01 15:40:55,886 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:55,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:55,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-01 15:40:55,886 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:55,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1188116900, now seen corresponding path program 2 times [2022-03-01 15:40:55,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:55,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940578545] [2022-03-01 15:40:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:55,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:40:56,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:56,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940578545] [2022-03-01 15:40:56,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940578545] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:40:56,020 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:40:56,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-01 15:40:56,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213116455] [2022-03-01 15:40:56,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:40:56,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-01 15:40:56,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:56,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-01 15:40:56,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-01 15:40:56,021 INFO L87 Difference]: Start difference. First operand 715 states and 1901 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:56,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:56,157 INFO L93 Difference]: Finished difference Result 1035 states and 2804 transitions. [2022-03-01 15:40:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 15:40:56,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-03-01 15:40:56,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:56,163 INFO L225 Difference]: With dead ends: 1035 [2022-03-01 15:40:56,163 INFO L226 Difference]: Without dead ends: 1035 [2022-03-01 15:40:56,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-01 15:40:56,167 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 118 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:56,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 294 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:40:56,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2022-03-01 15:40:56,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 735. [2022-03-01 15:40:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 2.664850136239782) internal successors, (1956), 734 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1956 transitions. [2022-03-01 15:40:56,191 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1956 transitions. Word has length 76 [2022-03-01 15:40:56,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:56,193 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1956 transitions. [2022-03-01 15:40:56,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:56,193 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1956 transitions. [2022-03-01 15:40:56,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-01 15:40:56,197 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:56,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:56,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 15:40:56,198 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:56,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1745682415, now seen corresponding path program 1 times [2022-03-01 15:40:56,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:56,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864658622] [2022-03-01 15:40:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:56,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:40:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:40:56,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:40:56,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864658622] [2022-03-01 15:40:56,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864658622] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:40:56,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430985609] [2022-03-01 15:40:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:56,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:40:56,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:40:56,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:40:56,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 15:40:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:40:56,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-01 15:40:56,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:40:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:40:56,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:40:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:40:57,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430985609] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:40:57,440 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:40:57,445 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-01 15:40:57,445 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572695640] [2022-03-01 15:40:57,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:40:57,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-01 15:40:57,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:40:57,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-01 15:40:57,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-03-01 15:40:57,447 INFO L87 Difference]: Start difference. First operand 735 states and 1956 transitions. Second operand has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:59,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:40:59,674 INFO L93 Difference]: Finished difference Result 2989 states and 8606 transitions. [2022-03-01 15:40:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-01 15:40:59,675 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 0 states have call successors, (0), 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 83 [2022-03-01 15:40:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:40:59,690 INFO L225 Difference]: With dead ends: 2989 [2022-03-01 15:40:59,690 INFO L226 Difference]: Without dead ends: 2989 [2022-03-01 15:40:59,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=546, Invalid=2210, Unknown=0, NotChecked=0, Total=2756 [2022-03-01 15:40:59,692 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 1756 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 15:40:59,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1756 Valid, 1072 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-01 15:40:59,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2022-03-01 15:40:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1831. [2022-03-01 15:40:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 2.8136612021857923) internal successors, (5149), 1830 states have internal predecessors, (5149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 5149 transitions. [2022-03-01 15:40:59,751 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 5149 transitions. Word has length 83 [2022-03-01 15:40:59,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:40:59,752 INFO L470 AbstractCegarLoop]: Abstraction has 1831 states and 5149 transitions. [2022-03-01 15:40:59,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:40:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 5149 transitions. [2022-03-01 15:40:59,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-01 15:40:59,758 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:40:59,759 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:40:59,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 15:40:59,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-03-01 15:40:59,981 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:40:59,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:40:59,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1200855136, now seen corresponding path program 2 times [2022-03-01 15:40:59,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:40:59,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241537372] [2022-03-01 15:40:59,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:40:59,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 15:41:00,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:00,053 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241537372] [2022-03-01 15:41:00,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241537372] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:00,053 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:00,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 15:41:00,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097333685] [2022-03-01 15:41:00,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:00,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 15:41:00,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:00,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 15:41:00,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 15:41:00,057 INFO L87 Difference]: Start difference. First operand 1831 states and 5149 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:00,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:00,096 INFO L93 Difference]: Finished difference Result 3104 states and 8558 transitions. [2022-03-01 15:41:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 15:41:00,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 97 [2022-03-01 15:41:00,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:00,111 INFO L225 Difference]: With dead ends: 3104 [2022-03-01 15:41:00,111 INFO L226 Difference]: Without dead ends: 3104 [2022-03-01 15:41:00,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 15:41:00,112 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 92 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:00,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 317 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:41:00,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2022-03-01 15:41:00,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2777. [2022-03-01 15:41:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2776 states have (on average 2.805835734870317) internal successors, (7789), 2776 states have internal predecessors, (7789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 7789 transitions. [2022-03-01 15:41:00,188 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 7789 transitions. Word has length 97 [2022-03-01 15:41:00,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:00,188 INFO L470 AbstractCegarLoop]: Abstraction has 2777 states and 7789 transitions. [2022-03-01 15:41:00,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 7789 transitions. [2022-03-01 15:41:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-01 15:41:00,218 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:00,219 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:00,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-01 15:41:00,219 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:00,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash -272535424, now seen corresponding path program 1 times [2022-03-01 15:41:00,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:00,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324126910] [2022-03-01 15:41:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:00,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-03-01 15:41:00,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:00,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324126910] [2022-03-01 15:41:00,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324126910] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 15:41:00,312 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 15:41:00,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 15:41:00,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442441283] [2022-03-01 15:41:00,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 15:41:00,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 15:41:00,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:00,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 15:41:00,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 15:41:00,314 INFO L87 Difference]: Start difference. First operand 2777 states and 7789 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:00,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:00,358 INFO L93 Difference]: Finished difference Result 4564 states and 12641 transitions. [2022-03-01 15:41:00,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 15:41:00,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 97 [2022-03-01 15:41:00,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:00,397 INFO L225 Difference]: With dead ends: 4564 [2022-03-01 15:41:00,397 INFO L226 Difference]: Without dead ends: 4564 [2022-03-01 15:41:00,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 15:41:00,399 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 77 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:00,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 292 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 15:41:00,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2022-03-01 15:41:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4174. [2022-03-01 15:41:00,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4174 states, 4173 states have (on average 2.8023005032350827) internal successors, (11694), 4173 states have internal predecessors, (11694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 11694 transitions. [2022-03-01 15:41:00,521 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 11694 transitions. Word has length 97 [2022-03-01 15:41:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:00,522 INFO L470 AbstractCegarLoop]: Abstraction has 4174 states and 11694 transitions. [2022-03-01 15:41:00,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 11694 transitions. [2022-03-01 15:41:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-01 15:41:00,534 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:00,534 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:00,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 15:41:00,534 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:00,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:00,535 INFO L85 PathProgramCache]: Analyzing trace with hash 83701920, now seen corresponding path program 1 times [2022-03-01 15:41:00,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:00,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901578252] [2022-03-01 15:41:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:00,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:00,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:00,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901578252] [2022-03-01 15:41:00,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901578252] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:00,700 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168916831] [2022-03-01 15:41:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:00,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:00,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:00,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:00,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 15:41:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:00,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 15:41:00,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:01,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:01,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168916831] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:41:01,289 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:41:01,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-03-01 15:41:01,290 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098402765] [2022-03-01 15:41:01,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:41:01,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 15:41:01,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:01,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 15:41:01,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-01 15:41:01,291 INFO L87 Difference]: Start difference. First operand 4174 states and 11694 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:01,508 INFO L93 Difference]: Finished difference Result 8287 states and 23042 transitions. [2022-03-01 15:41:01,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 15:41:01,509 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 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 97 [2022-03-01 15:41:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:01,534 INFO L225 Difference]: With dead ends: 8287 [2022-03-01 15:41:01,534 INFO L226 Difference]: Without dead ends: 8236 [2022-03-01 15:41:01,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-03-01 15:41:01,535 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 245 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:01,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 797 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:41:01,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8236 states. [2022-03-01 15:41:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8236 to 7238. [2022-03-01 15:41:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7238 states, 7237 states have (on average 2.8301782506563495) internal successors, (20482), 7237 states have internal predecessors, (20482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7238 states to 7238 states and 20482 transitions. [2022-03-01 15:41:01,756 INFO L78 Accepts]: Start accepts. Automaton has 7238 states and 20482 transitions. Word has length 97 [2022-03-01 15:41:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:01,757 INFO L470 AbstractCegarLoop]: Abstraction has 7238 states and 20482 transitions. [2022-03-01 15:41:01,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7238 states and 20482 transitions. [2022-03-01 15:41:01,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-01 15:41:01,778 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:01,778 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:01,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-01 15:41:02,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:02,002 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:02,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1555304934, now seen corresponding path program 2 times [2022-03-01 15:41:02,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:02,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29345052] [2022-03-01 15:41:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:02,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:02,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:02,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29345052] [2022-03-01 15:41:02,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29345052] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:02,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904875166] [2022-03-01 15:41:02,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:41:02,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:02,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:02,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:02,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 15:41:02,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:41:02,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:41:02,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 15:41:02,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:02,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:02,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904875166] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:41:02,790 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:41:02,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 14 [2022-03-01 15:41:02,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536726415] [2022-03-01 15:41:02,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:41:02,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 15:41:02,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 15:41:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-03-01 15:41:02,792 INFO L87 Difference]: Start difference. First operand 7238 states and 20482 transitions. Second operand has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:03,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:03,237 INFO L93 Difference]: Finished difference Result 9212 states and 25754 transitions. [2022-03-01 15:41:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 15:41:03,237 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 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 97 [2022-03-01 15:41:03,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:03,262 INFO L225 Difference]: With dead ends: 9212 [2022-03-01 15:41:03,262 INFO L226 Difference]: Without dead ends: 9161 [2022-03-01 15:41:03,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-03-01 15:41:03,263 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 253 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:03,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1181 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:41:03,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9161 states. [2022-03-01 15:41:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9161 to 8462. [2022-03-01 15:41:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8462 states, 8461 states have (on average 2.8311074341094433) internal successors, (23954), 8461 states have internal predecessors, (23954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:03,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 23954 transitions. [2022-03-01 15:41:03,515 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 23954 transitions. Word has length 97 [2022-03-01 15:41:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:03,516 INFO L470 AbstractCegarLoop]: Abstraction has 8462 states and 23954 transitions. [2022-03-01 15:41:03,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 23954 transitions. [2022-03-01 15:41:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-01 15:41:03,538 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:03,538 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:03,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 15:41:03,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:03,761 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:03,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:03,762 INFO L85 PathProgramCache]: Analyzing trace with hash 723241996, now seen corresponding path program 3 times [2022-03-01 15:41:03,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:03,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064641834] [2022-03-01 15:41:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:03,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:03,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:03,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064641834] [2022-03-01 15:41:03,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064641834] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:03,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691343310] [2022-03-01 15:41:03,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:41:03,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:03,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:03,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:03,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 15:41:04,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 15:41:04,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:41:04,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 15:41:04,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:04,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:04,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:04,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691343310] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:41:04,516 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:41:04,516 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-03-01 15:41:04,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617415216] [2022-03-01 15:41:04,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:41:04,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 15:41:04,517 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 15:41:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-01 15:41:04,518 INFO L87 Difference]: Start difference. First operand 8462 states and 23954 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:04,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:04,799 INFO L93 Difference]: Finished difference Result 11939 states and 33104 transitions. [2022-03-01 15:41:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:41:04,800 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 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 97 [2022-03-01 15:41:04,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:04,833 INFO L225 Difference]: With dead ends: 11939 [2022-03-01 15:41:04,833 INFO L226 Difference]: Without dead ends: 11888 [2022-03-01 15:41:04,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-03-01 15:41:04,834 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 240 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:04,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1350 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:41:04,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11888 states. [2022-03-01 15:41:05,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11888 to 8938. [2022-03-01 15:41:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8938 states, 8937 states have (on average 2.8375293722725745) internal successors, (25359), 8937 states have internal predecessors, (25359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:05,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8938 states to 8938 states and 25359 transitions. [2022-03-01 15:41:05,095 INFO L78 Accepts]: Start accepts. Automaton has 8938 states and 25359 transitions. Word has length 97 [2022-03-01 15:41:05,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:05,096 INFO L470 AbstractCegarLoop]: Abstraction has 8938 states and 25359 transitions. [2022-03-01 15:41:05,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 8938 states and 25359 transitions. [2022-03-01 15:41:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-01 15:41:05,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:05,125 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:05,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 15:41:05,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-01 15:41:05,340 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:05,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash 32170892, now seen corresponding path program 4 times [2022-03-01 15:41:05,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:05,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503038595] [2022-03-01 15:41:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:05,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:05,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:05,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503038595] [2022-03-01 15:41:05,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503038595] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:05,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112357875] [2022-03-01 15:41:05,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:41:05,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:05,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:05,515 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:05,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 15:41:05,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:41:05,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:41:05,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 15:41:05,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:05,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:06,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112357875] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:41:06,091 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:41:06,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-03-01 15:41:06,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801413044] [2022-03-01 15:41:06,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:41:06,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 15:41:06,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:06,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 15:41:06,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-01 15:41:06,093 INFO L87 Difference]: Start difference. First operand 8938 states and 25359 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:06,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:06,380 INFO L93 Difference]: Finished difference Result 14338 states and 40111 transitions. [2022-03-01 15:41:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:41:06,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 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 97 [2022-03-01 15:41:06,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:06,418 INFO L225 Difference]: With dead ends: 14338 [2022-03-01 15:41:06,418 INFO L226 Difference]: Without dead ends: 14287 [2022-03-01 15:41:06,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-03-01 15:41:06,419 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 236 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:06,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1492 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:41:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14287 states. [2022-03-01 15:41:06,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14287 to 11322. [2022-03-01 15:41:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11322 states, 11321 states have (on average 2.8554014663015637) internal successors, (32326), 11321 states have internal predecessors, (32326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11322 states to 11322 states and 32326 transitions. [2022-03-01 15:41:06,736 INFO L78 Accepts]: Start accepts. Automaton has 11322 states and 32326 transitions. Word has length 97 [2022-03-01 15:41:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:06,737 INFO L470 AbstractCegarLoop]: Abstraction has 11322 states and 32326 transitions. [2022-03-01 15:41:06,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 11322 states and 32326 transitions. [2022-03-01 15:41:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-01 15:41:06,760 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:06,760 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:06,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-01 15:41:06,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:06,984 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1845224352, now seen corresponding path program 5 times [2022-03-01 15:41:06,984 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:06,984 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563630891] [2022-03-01 15:41:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:06,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:07,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:07,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563630891] [2022-03-01 15:41:07,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563630891] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:07,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849148678] [2022-03-01 15:41:07,108 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 15:41:07,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:07,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:07,109 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:07,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 15:41:07,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-01 15:41:07,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:41:07,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 15:41:07,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:07,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 15:41:07,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849148678] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:41:07,803 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:41:07,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-03-01 15:41:07,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338500817] [2022-03-01 15:41:07,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:41:07,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-01 15:41:07,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-01 15:41:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-01 15:41:07,805 INFO L87 Difference]: Start difference. First operand 11322 states and 32326 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:08,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:08,037 INFO L93 Difference]: Finished difference Result 13231 states and 37401 transitions. [2022-03-01 15:41:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-01 15:41:08,037 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 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 97 [2022-03-01 15:41:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:08,067 INFO L225 Difference]: With dead ends: 13231 [2022-03-01 15:41:08,067 INFO L226 Difference]: Without dead ends: 13180 [2022-03-01 15:41:08,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-03-01 15:41:08,068 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 227 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:08,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 968 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 15:41:08,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13180 states. [2022-03-01 15:41:08,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13180 to 12118. [2022-03-01 15:41:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 2.8667161838738964) internal successors, (34736), 12117 states have internal predecessors, (34736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 34736 transitions. [2022-03-01 15:41:08,338 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 34736 transitions. Word has length 97 [2022-03-01 15:41:08,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:08,338 INFO L470 AbstractCegarLoop]: Abstraction has 12118 states and 34736 transitions. [2022-03-01 15:41:08,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 34736 transitions. [2022-03-01 15:41:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-01 15:41:08,368 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:08,368 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:08,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 15:41:08,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:08,573 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:08,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash -524522290, now seen corresponding path program 6 times [2022-03-01 15:41:08,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:08,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109585831] [2022-03-01 15:41:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:08,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:08,763 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:08,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109585831] [2022-03-01 15:41:08,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109585831] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:08,763 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136461843] [2022-03-01 15:41:08,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 15:41:08,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:08,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:08,768 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:08,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 15:41:08,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 15:41:08,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:41:08,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 15:41:08,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:09,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:09,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136461843] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:41:09,334 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:41:09,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-03-01 15:41:09,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001243108] [2022-03-01 15:41:09,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:41:09,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 15:41:09,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 15:41:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-01 15:41:09,335 INFO L87 Difference]: Start difference. First operand 12118 states and 34736 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:09,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:09,598 INFO L93 Difference]: Finished difference Result 17960 states and 50551 transitions. [2022-03-01 15:41:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:41:09,598 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 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 97 [2022-03-01 15:41:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:09,634 INFO L225 Difference]: With dead ends: 17960 [2022-03-01 15:41:09,634 INFO L226 Difference]: Without dead ends: 17909 [2022-03-01 15:41:09,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-03-01 15:41:09,635 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 271 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:09,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 1143 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:41:09,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17909 states. [2022-03-01 15:41:09,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17909 to 10198. [2022-03-01 15:41:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10198 states, 10197 states have (on average 2.8494655290771798) internal successors, (29056), 10197 states have internal predecessors, (29056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10198 states to 10198 states and 29056 transitions. [2022-03-01 15:41:09,935 INFO L78 Accepts]: Start accepts. Automaton has 10198 states and 29056 transitions. Word has length 97 [2022-03-01 15:41:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:09,936 INFO L470 AbstractCegarLoop]: Abstraction has 10198 states and 29056 transitions. [2022-03-01 15:41:09,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 10198 states and 29056 transitions. [2022-03-01 15:41:09,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-03-01 15:41:09,955 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:09,955 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:09,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 15:41:10,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-01 15:41:10,160 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:10,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:10,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1215593394, now seen corresponding path program 7 times [2022-03-01 15:41:10,161 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:10,161 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099537826] [2022-03-01 15:41:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:10,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:10,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099537826] [2022-03-01 15:41:10,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099537826] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:10,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841583443] [2022-03-01 15:41:10,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 15:41:10,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:10,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:10,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:10,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 15:41:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:10,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-01 15:41:10,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:10,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 15:41:10,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841583443] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:41:10,806 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:41:10,806 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-03-01 15:41:10,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770701180] [2022-03-01 15:41:10,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:41:10,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-01 15:41:10,807 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:10,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-01 15:41:10,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-01 15:41:10,808 INFO L87 Difference]: Start difference. First operand 10198 states and 29056 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:11,139 INFO L93 Difference]: Finished difference Result 13802 states and 38346 transitions. [2022-03-01 15:41:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-01 15:41:11,139 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 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 97 [2022-03-01 15:41:11,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:11,161 INFO L225 Difference]: With dead ends: 13802 [2022-03-01 15:41:11,161 INFO L226 Difference]: Without dead ends: 13751 [2022-03-01 15:41:11,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-03-01 15:41:11,162 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 262 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:11,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 1511 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-01 15:41:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13751 states. [2022-03-01 15:41:11,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13751 to 9330. [2022-03-01 15:41:11,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9330 states, 9329 states have (on average 2.836424054025083) internal successors, (26461), 9329 states have internal predecessors, (26461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9330 states to 9330 states and 26461 transitions. [2022-03-01 15:41:11,358 INFO L78 Accepts]: Start accepts. Automaton has 9330 states and 26461 transitions. Word has length 97 [2022-03-01 15:41:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:11,358 INFO L470 AbstractCegarLoop]: Abstraction has 9330 states and 26461 transitions. [2022-03-01 15:41:11,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:11,358 INFO L276 IsEmpty]: Start isEmpty. Operand 9330 states and 26461 transitions. [2022-03-01 15:41:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-01 15:41:11,370 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:11,370 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:11,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 15:41:11,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-01 15:41:11,571 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:11,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:11,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1544870038, now seen corresponding path program 8 times [2022-03-01 15:41:11,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:11,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391031463] [2022-03-01 15:41:11,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:11,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:41:11,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:11,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391031463] [2022-03-01 15:41:11,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391031463] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:11,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958168149] [2022-03-01 15:41:11,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 15:41:11,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:11,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:11,962 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:11,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 15:41:12,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 15:41:12,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:41:12,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-01 15:41:12,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:41:13,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:41:15,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958168149] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:41:15,452 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:41:15,452 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 40 [2022-03-01 15:41:15,452 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283976566] [2022-03-01 15:41:15,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:41:15,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-01 15:41:15,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:15,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-01 15:41:15,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2022-03-01 15:41:15,455 INFO L87 Difference]: Start difference. First operand 9330 states and 26461 transitions. Second operand has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:18,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:41:26,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:41:26,276 INFO L93 Difference]: Finished difference Result 22223 states and 61509 transitions. [2022-03-01 15:41:26,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-01 15:41:26,277 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 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 104 [2022-03-01 15:41:26,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:41:26,316 INFO L225 Difference]: With dead ends: 22223 [2022-03-01 15:41:26,316 INFO L226 Difference]: Without dead ends: 21785 [2022-03-01 15:41:26,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 182 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1196, Invalid=5776, Unknown=0, NotChecked=0, Total=6972 [2022-03-01 15:41:26,318 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 2138 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 128 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 4479 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-01 15:41:26,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2138 Valid, 4479 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1596 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-03-01 15:41:26,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21785 states. [2022-03-01 15:41:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21785 to 11963. [2022-03-01 15:41:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11963 states, 11962 states have (on average 2.802457782979435) internal successors, (33523), 11962 states have internal predecessors, (33523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11963 states to 11963 states and 33523 transitions. [2022-03-01 15:41:26,621 INFO L78 Accepts]: Start accepts. Automaton has 11963 states and 33523 transitions. Word has length 104 [2022-03-01 15:41:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:41:26,621 INFO L470 AbstractCegarLoop]: Abstraction has 11963 states and 33523 transitions. [2022-03-01 15:41:26,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.05) internal successors, (202), 40 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:41:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 11963 states and 33523 transitions. [2022-03-01 15:41:26,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-01 15:41:26,638 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:41:26,638 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:41:26,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 15:41:26,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-01 15:41:26,838 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:41:26,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:41:26,839 INFO L85 PathProgramCache]: Analyzing trace with hash -763458489, now seen corresponding path program 9 times [2022-03-01 15:41:26,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:41:26,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623915507] [2022-03-01 15:41:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:41:26,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:41:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:41:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:41:27,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:41:27,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623915507] [2022-03-01 15:41:27,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623915507] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:41:27,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129433589] [2022-03-01 15:41:27,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 15:41:27,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:41:27,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:41:27,190 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:41:27,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 15:41:27,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 15:41:27,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:41:27,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-01 15:41:27,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:41:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:41:28,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:41:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:41:32,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129433589] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:41:32,337 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:41:32,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 38 [2022-03-01 15:41:32,337 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232028418] [2022-03-01 15:41:32,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:41:32,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-01 15:41:32,338 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:41:32,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-01 15:41:32,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2022-03-01 15:41:32,339 INFO L87 Difference]: Start difference. First operand 11963 states and 33523 transitions. Second operand has 38 states, 38 states have (on average 5.842105263157895) internal successors, (222), 38 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:42:40,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:42:42,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:42:44,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:42:51,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:42:58,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:43:05,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:43:18,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:43:25,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:43:43,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:44:34,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 15:44:34,962 INFO L93 Difference]: Finished difference Result 32439 states and 89198 transitions. [2022-03-01 15:44:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-01 15:44:34,962 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.842105263157895) internal successors, (222), 38 states have internal predecessors, (222), 0 states have call successors, (0), 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 104 [2022-03-01 15:44:34,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 15:44:35,024 INFO L225 Difference]: With dead ends: 32439 [2022-03-01 15:44:35,024 INFO L226 Difference]: Without dead ends: 31671 [2022-03-01 15:44:35,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 185 SyntacticMatches, 2 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8781 ImplicationChecksByTransitivity, 148.8s TimeCoverageRelationStatistics Valid=4126, Invalid=22926, Unknown=8, NotChecked=0, Total=27060 [2022-03-01 15:44:35,029 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 3144 mSDsluCounter, 6688 mSDsCounter, 0 mSdLazyCounter, 2882 mSolverCounterSat, 183 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3144 SdHoareTripleChecker+Valid, 6437 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2882 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2022-03-01 15:44:35,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3144 Valid, 6437 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2882 Invalid, 3 Unknown, 0 Unchecked, 37.7s Time] [2022-03-01 15:44:35,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31671 states. [2022-03-01 15:44:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31671 to 24515. [2022-03-01 15:44:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24515 states, 24514 states have (on average 2.8329933915313696) internal successors, (69448), 24514 states have internal predecessors, (69448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24515 states to 24515 states and 69448 transitions. [2022-03-01 15:44:35,488 INFO L78 Accepts]: Start accepts. Automaton has 24515 states and 69448 transitions. Word has length 104 [2022-03-01 15:44:35,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 15:44:35,488 INFO L470 AbstractCegarLoop]: Abstraction has 24515 states and 69448 transitions. [2022-03-01 15:44:35,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.842105263157895) internal successors, (222), 38 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:44:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand 24515 states and 69448 transitions. [2022-03-01 15:44:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-03-01 15:44:35,667 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 15:44:35,667 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 15:44:35,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-01 15:44:35,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-01 15:44:35,876 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 15:44:35,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 15:44:35,877 INFO L85 PathProgramCache]: Analyzing trace with hash 412786434, now seen corresponding path program 10 times [2022-03-01 15:44:35,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 15:44:35,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328193219] [2022-03-01 15:44:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 15:44:35,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 15:44:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 15:44:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:36,321 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 15:44:36,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328193219] [2022-03-01 15:44:36,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328193219] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 15:44:36,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187215244] [2022-03-01 15:44:36,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 15:44:36,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:44:36,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 15:44:36,322 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 15:44:36,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 15:44:36,561 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 15:44:36,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 15:44:36,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-01 15:44:36,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 15:44:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:38,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 15:44:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 15:44:45,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187215244] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 15:44:45,604 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 15:44:45,604 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 18] total 44 [2022-03-01 15:44:45,604 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530325141] [2022-03-01 15:44:45,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 15:44:45,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-01 15:44:45,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 15:44:45,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-01 15:44:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1656, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 15:44:45,608 INFO L87 Difference]: Start difference. First operand 24515 states and 69448 transitions. Second operand has 44 states, 44 states have (on average 4.931818181818182) internal successors, (217), 44 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 15:45:28,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:45:42,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:48:18,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:49:58,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:52:01,984 WARN L228 SmtUtils]: Spent 13.60s on a formula simplification. DAG size of input: 59 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-01 15:52:33,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-01 15:53:49,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-03-01 15:55:13,948 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 15:55:13,948 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 15:55:13,975 WARN L244 SmtUtils]: Removed 8 from assertion stack [2022-03-01 15:55:13,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 304 states. [2022-03-01 15:55:13,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 209 SyntacticMatches, 6 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47072 ImplicationChecksByTransitivity, 596.5s TimeCoverageRelationStatistics Valid=10209, Invalid=102988, Unknown=35, NotChecked=0, Total=113232 [2022-03-01 15:55:13,985 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 4086 mSDsluCounter, 11983 mSDsCounter, 0 mSdLazyCounter, 4338 mSolverCounterSat, 289 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 10910 SdHoareTripleChecker+Invalid, 6478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 4338 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 1847 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2022-03-01 15:55:13,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4086 Valid, 10910 Invalid, 6478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 4338 Invalid, 4 Unknown, 1847 Unchecked, 35.0s Time] [2022-03-01 15:55:13,986 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-01 15:55:13,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 15:55:14,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 15:55:14,187 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (24515states) and FLOYD_HOARE automaton (currently 304 states, 44 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 44 for 166ms.. [2022-03-01 15:55:14,188 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 15:55:14,188 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 15:55:14,190 INFO L732 BasicCegarLoop]: Path program histogram: [10, 2, 2, 2, 1, 1, 1] [2022-03-01 15:55:14,192 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 15:55:14,192 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 15:55:14,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 03:55:14 BasicIcfg [2022-03-01 15:55:14,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 15:55:14,194 INFO L158 Benchmark]: Toolchain (without parser) took 864715.92ms. Allocated memory was 191.9MB in the beginning and 807.4MB in the end (delta: 615.5MB). Free memory was 132.8MB in the beginning and 443.9MB in the end (delta: -311.1MB). Peak memory consumption was 305.9MB. Max. memory is 8.0GB. [2022-03-01 15:55:14,194 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 191.9MB. Free memory was 149.0MB in the beginning and 148.9MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 15:55:14,194 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.45ms. Allocated memory was 191.9MB in the beginning and 247.5MB in the end (delta: 55.6MB). Free memory was 132.5MB in the beginning and 216.2MB in the end (delta: -83.7MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. [2022-03-01 15:55:14,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.03ms. Allocated memory is still 247.5MB. Free memory was 216.2MB in the beginning and 214.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 15:55:14,195 INFO L158 Benchmark]: Boogie Preprocessor took 31.50ms. Allocated memory is still 247.5MB. Free memory was 214.8MB in the beginning and 213.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 15:55:14,195 INFO L158 Benchmark]: RCFGBuilder took 318.21ms. Allocated memory is still 247.5MB. Free memory was 213.5MB in the beginning and 200.5MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-01 15:55:14,195 INFO L158 Benchmark]: TraceAbstraction took 864015.05ms. Allocated memory was 247.5MB in the beginning and 807.4MB in the end (delta: 559.9MB). Free memory was 199.9MB in the beginning and 443.9MB in the end (delta: -244.0MB). Peak memory consumption was 317.5MB. Max. memory is 8.0GB. [2022-03-01 15:55:14,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 191.9MB. Free memory was 149.0MB in the beginning and 148.9MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 302.45ms. Allocated memory was 191.9MB in the beginning and 247.5MB in the end (delta: 55.6MB). Free memory was 132.5MB in the beginning and 216.2MB in the end (delta: -83.7MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.03ms. Allocated memory is still 247.5MB. Free memory was 216.2MB in the beginning and 214.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.50ms. Allocated memory is still 247.5MB. Free memory was 214.8MB in the beginning and 213.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 318.21ms. Allocated memory is still 247.5MB. Free memory was 213.5MB in the beginning and 200.5MB in the end (delta: 13.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 864015.05ms. Allocated memory was 247.5MB in the beginning and 807.4MB in the end (delta: 559.9MB). Free memory was 199.9MB in the beginning and 443.9MB in the end (delta: -244.0MB). Peak memory consumption was 317.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (24515states) and FLOYD_HOARE automaton (currently 304 states, 44 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 44 for 166ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (24515states) and FLOYD_HOARE automaton (currently 304 states, 44 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 44 for 166ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (24515states) and FLOYD_HOARE automaton (currently 304 states, 44 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 44 for 166ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 863.9s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.4s, AutomataDifference: 827.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 13992 SdHoareTripleChecker+Valid, 79.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13992 mSDsluCounter, 33707 SdHoareTripleChecker+Invalid, 77.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1988 IncrementalHoareTripleChecker+Unchecked, 33882 mSDsCounter, 804 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11651 IncrementalHoareTripleChecker+Invalid, 14451 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 804 mSolverCounterUnsat, 3209 mSDtfsCounter, 11651 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3032 GetRequests, 2228 SyntacticMatches, 28 SemanticMatches, 775 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 58885 ImplicationChecksByTransitivity, 759.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24515occurred in iteration=18, InterpolantAutomatonStates: 358, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 41600 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 27.2s InterpolantComputationTime, 2860 NumberOfCodeBlocks, 2860 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 3967 ConstructedInterpolants, 28 QuantifiedInterpolants, 30526 SizeOfPredicates, 135 NumberOfNonLiveVariables, 2386 ConjunctsInSsa, 228 ConjunctsInUnsatCore, 43 InterpolantComputations, 7 PerfectInterpolantSequences, 166/653 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