/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/popl20-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-18 14:31:54,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-18 14:31:54,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-18 14:31:54,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-18 14:31:54,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-18 14:31:54,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-18 14:31:54,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-18 14:31:54,454 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 [2022-02-18 14:31:54,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-18 14:31:54,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-18 14:31:54,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-18 14:31:54,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-18 14:31:54,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-18 14:31:54,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-18 14:31:54,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-18 14:31:54,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-18 14:31:54,482 INFO L138 SettingsManager]: * Use SBE=true [2022-02-18 14:31:54,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-18 14:31:54,483 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-18 14:31:54,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-18 14:31:54,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-18 14:31:54,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-18 14:31:54,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-18 14:31:54,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-18 14:31:54,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-18 14:31:54,484 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-18 14:31:54,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-18 14:31:54,484 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-18 14:31:54,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-18 14:31:54,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-18 14:31:54,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-18 14:31:54,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-18 14:31:54,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-18 14:31:54,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 14:31:54,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-18 14:31:54,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-18 14:31:54,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-18 14:31:54,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-18 14:31:54,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-18 14:31:54,486 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-18 14:31:54,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-18 14:31:54,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-18 14:31:54,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-18 14:31:54,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-18 14:31:54,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-18 14:31:54,715 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-18 14:31:54,717 INFO L275 PluginConnector]: CDTParser initialized [2022-02-18 14:31:54,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-02-18 14:31:54,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddc37c7c/69dd5f316f844566bd24aced3f662b95/FLAGfc8e201b3 [2022-02-18 14:31:55,153 INFO L306 CDTParser]: Found 1 translation units. [2022-02-18 14:31:55,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-02-18 14:31:55,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddc37c7c/69dd5f316f844566bd24aced3f662b95/FLAGfc8e201b3 [2022-02-18 14:31:55,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddc37c7c/69dd5f316f844566bd24aced3f662b95 [2022-02-18 14:31:55,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-18 14:31:55,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-18 14:31:55,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-18 14:31:55,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-18 14:31:55,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-18 14:31:55,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c11fdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55, skipping insertion in model container [2022-02-18 14:31:55,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-18 14:31:55,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-18 14:31:55,796 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/popl20-bad-threaded-sum-2.wvr.c[2476,2489] [2022-02-18 14:31:55,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-18 14:31:55,803 INFO L203 MainTranslator]: Completed pre-run [2022-02-18 14:31:55,817 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/popl20-bad-threaded-sum-2.wvr.c[2476,2489] [2022-02-18 14:31:55,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-18 14:31:55,827 INFO L208 MainTranslator]: Completed translation [2022-02-18 14:31:55,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55 WrapperNode [2022-02-18 14:31:55,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-18 14:31:55,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-18 14:31:55,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-18 14:31:55,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-18 14:31:55,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,860 INFO L137 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-02-18 14:31:55,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-18 14:31:55,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-18 14:31:55,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-18 14:31:55,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-18 14:31:55,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-18 14:31:55,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-18 14:31:55,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-18 14:31:55,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-18 14:31:55,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55" (1/1) ... [2022-02-18 14:31:55,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-18 14:31:55,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:31:55,911 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) [2022-02-18 14:31:55,920 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 [2022-02-18 14:31:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-18 14:31:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-18 14:31:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-18 14:31:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-18 14:31:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-18 14:31:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-18 14:31:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-18 14:31:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-18 14:31:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-18 14:31:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-18 14:31:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-18 14:31:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-18 14:31:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-18 14:31:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-18 14:31:55,941 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-18 14:31:55,991 INFO L234 CfgBuilder]: Building ICFG [2022-02-18 14:31:55,992 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-18 14:31:56,162 INFO L275 CfgBuilder]: Performing block encoding [2022-02-18 14:31:56,201 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-18 14:31:56,202 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-18 14:31:56,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:31:56 BoogieIcfgContainer [2022-02-18 14:31:56,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-18 14:31:56,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-18 14:31:56,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-18 14:31:56,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-18 14:31:56,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 02:31:55" (1/3) ... [2022-02-18 14:31:56,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522a9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:31:56, skipping insertion in model container [2022-02-18 14:31:56,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:31:55" (2/3) ... [2022-02-18 14:31:56,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522a9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:31:56, skipping insertion in model container [2022-02-18 14:31:56,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:31:56" (3/3) ... [2022-02-18 14:31:56,223 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2022-02-18 14:31:56,226 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-18 14:31:56,226 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-18 14:31:56,227 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-18 14:31:56,227 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-18 14:31:56,256 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,257 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,257 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,257 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,258 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,258 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,258 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,259 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,260 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,260 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,261 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,262 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,262 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,262 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,262 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,262 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,262 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,263 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,263 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,263 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,263 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,263 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,266 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,266 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,266 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,266 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,267 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,268 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-18 14:31:56,270 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-18 14:31:56,300 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-18 14:31:56,304 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 [2022-02-18 14:31:56,305 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-18 14:31:56,312 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 88 transitions, 192 flow [2022-02-18 14:31:56,344 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:31:56,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:31:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-18 14:31:56,358 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:31:56,359 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] [2022-02-18 14:31:56,359 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:31:56,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:31:56,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1436780155, now seen corresponding path program 1 times [2022-02-18 14:31:56,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:31:56,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366053796] [2022-02-18 14:31:56,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:31:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:31:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:31:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:31:56,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:31:56,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366053796] [2022-02-18 14:31:56,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366053796] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:31:56,557 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:31:56,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-18 14:31:56,558 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556488834] [2022-02-18 14:31:56,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:31:56,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-18 14:31:56,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:31:56,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-18 14:31:56,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-18 14:31:56,589 INFO L87 Difference]: Start difference. First operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 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 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:31:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:31:56,642 INFO L93 Difference]: Finished difference Result 336 states and 794 transitions. [2022-02-18 14:31:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-18 14:31:56,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-02-18 14:31:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:31:56,661 INFO L225 Difference]: With dead ends: 336 [2022-02-18 14:31:56,662 INFO L226 Difference]: Without dead ends: 334 [2022-02-18 14:31:56,663 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 [2022-02-18 14:31:56,665 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:31:56,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-18 14:31:56,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-02-18 14:31:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2022-02-18 14:31:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 2.3783783783783785) internal successors, (792), 333 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:31:56,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 792 transitions. [2022-02-18 14:31:56,738 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 792 transitions. Word has length 64 [2022-02-18 14:31:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:31:56,739 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 792 transitions. [2022-02-18 14:31:56,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:31:56,739 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 792 transitions. [2022-02-18 14:31:56,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-02-18 14:31:56,742 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:31:56,745 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] [2022-02-18 14:31:56,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-18 14:31:56,745 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:31:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:31:56,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1759613989, now seen corresponding path program 1 times [2022-02-18 14:31:56,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:31:56,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281048233] [2022-02-18 14:31:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:31:56,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:31:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:31:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:31:57,028 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:31:57,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281048233] [2022-02-18 14:31:57,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281048233] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:31:57,028 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:31:57,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-18 14:31:57,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821248216] [2022-02-18 14:31:57,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:31:57,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-18 14:31:57,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:31:57,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-18 14:31:57,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-18 14:31:57,033 INFO L87 Difference]: Start difference. First operand 334 states and 792 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:31:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:31:57,169 INFO L93 Difference]: Finished difference Result 481 states and 1212 transitions. [2022-02-18 14:31:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-18 14:31:57,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-02-18 14:31:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:31:57,173 INFO L225 Difference]: With dead ends: 481 [2022-02-18 14:31:57,174 INFO L226 Difference]: Without dead ends: 433 [2022-02-18 14:31:57,175 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 [2022-02-18 14:31:57,176 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 78 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:31:57,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 223 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 14:31:57,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-02-18 14:31:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 377. [2022-02-18 14:31:57,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.4627659574468086) internal successors, (926), 376 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:31:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 926 transitions. [2022-02-18 14:31:57,198 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 926 transitions. Word has length 64 [2022-02-18 14:31:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:31:57,198 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 926 transitions. [2022-02-18 14:31:57,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:31:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 926 transitions. [2022-02-18 14:31:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-18 14:31:57,201 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:31:57,202 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] [2022-02-18 14:31:57,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-18 14:31:57,202 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:31:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:31:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1477238862, now seen corresponding path program 1 times [2022-02-18 14:31:57,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:31:57,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815233155] [2022-02-18 14:31:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:31:57,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:31:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:31:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:31:57,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:31:57,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815233155] [2022-02-18 14:31:57,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815233155] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:31:57,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534265085] [2022-02-18 14:31:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:31:57,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:31:57,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:31:57,761 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) [2022-02-18 14:31:57,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-18 14:31:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:31:57,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-18 14:31:57,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:31:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:31:58,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:31:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:31:59,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534265085] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-18 14:31:59,723 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-18 14:31:59,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13, 15] total 31 [2022-02-18 14:31:59,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079864106] [2022-02-18 14:31:59,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:31:59,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-18 14:31:59,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:31:59,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-18 14:31:59,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2022-02-18 14:31:59,724 INFO L87 Difference]: Start difference. First operand 377 states and 926 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:32:00,934 INFO L93 Difference]: Finished difference Result 1227 states and 3160 transitions. [2022-02-18 14:32:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-18 14:32:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-02-18 14:32:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:32:00,940 INFO L225 Difference]: With dead ends: 1227 [2022-02-18 14:32:00,940 INFO L226 Difference]: Without dead ends: 1116 [2022-02-18 14:32:00,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=431, Invalid=1825, Unknown=0, NotChecked=0, Total=2256 [2022-02-18 14:32:00,941 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 408 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:32:00,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 1085 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 399 Invalid, 0 Unknown, 78 Unchecked, 0.4s Time] [2022-02-18 14:32:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-02-18 14:32:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 445. [2022-02-18 14:32:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.515765765765766) internal successors, (1117), 444 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1117 transitions. [2022-02-18 14:32:00,999 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1117 transitions. Word has length 68 [2022-02-18 14:32:01,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:32:01,000 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1117 transitions. [2022-02-18 14:32:01,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:01,000 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1117 transitions. [2022-02-18 14:32:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-18 14:32:01,001 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:32:01,002 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] [2022-02-18 14:32:01,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-18 14:32:01,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:32:01,203 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:32:01,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:32:01,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1846595665, now seen corresponding path program 1 times [2022-02-18 14:32:01,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:32:01,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011369703] [2022-02-18 14:32:01,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:32:01,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:32:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:32:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:32:01,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:32:01,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011369703] [2022-02-18 14:32:01,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011369703] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:32:01,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232906873] [2022-02-18 14:32:01,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:32:01,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:32:01,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:32:01,876 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) [2022-02-18 14:32:01,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-18 14:32:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:32:02,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-18 14:32:02,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:32:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:32:02,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:32:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:32:04,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232906873] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:32:04,687 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:32:04,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 17] total 35 [2022-02-18 14:32:04,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506878604] [2022-02-18 14:32:04,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:32:04,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:32:04,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:32:04,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:32:04,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=936, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:32:04,689 INFO L87 Difference]: Start difference. First operand 445 states and 1117 transitions. Second operand has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:12,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:32:12,962 INFO L93 Difference]: Finished difference Result 3417 states and 8680 transitions. [2022-02-18 14:32:12,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-18 14:32:12,962 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-02-18 14:32:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:32:12,971 INFO L225 Difference]: With dead ends: 3417 [2022-02-18 14:32:12,971 INFO L226 Difference]: Without dead ends: 2352 [2022-02-18 14:32:12,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3330 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1790, Invalid=8110, Unknown=0, NotChecked=0, Total=9900 [2022-02-18 14:32:12,974 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 1615 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:32:12,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 2267 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1141 Invalid, 0 Unknown, 93 Unchecked, 2.1s Time] [2022-02-18 14:32:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-02-18 14:32:13,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 867. [2022-02-18 14:32:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6547344110854505) internal successors, (2299), 866 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2299 transitions. [2022-02-18 14:32:13,004 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2299 transitions. Word has length 71 [2022-02-18 14:32:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:32:13,005 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2299 transitions. [2022-02-18 14:32:13,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2299 transitions. [2022-02-18 14:32:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-18 14:32:13,007 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:32:13,007 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:32:13,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-18 14:32:13,207 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,SelfDestructingSolverStorable3 [2022-02-18 14:32:13,208 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:32:13,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:32:13,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1244300115, now seen corresponding path program 2 times [2022-02-18 14:32:13,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:32:13,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374734194] [2022-02-18 14:32:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:32:13,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:32:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:32:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-18 14:32:13,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:32:13,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374734194] [2022-02-18 14:32:13,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374734194] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:32:13,354 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:32:13,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-18 14:32:13,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094648917] [2022-02-18 14:32:13,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:32:13,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-18 14:32:13,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:32:13,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-18 14:32:13,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-18 14:32:13,356 INFO L87 Difference]: Start difference. First operand 867 states and 2299 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:32:13,488 INFO L93 Difference]: Finished difference Result 1714 states and 4518 transitions. [2022-02-18 14:32:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-18 14:32:13,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-18 14:32:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:32:13,496 INFO L225 Difference]: With dead ends: 1714 [2022-02-18 14:32:13,496 INFO L226 Difference]: Without dead ends: 1714 [2022-02-18 14:32:13,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-02-18 14:32:13,497 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 137 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:32:13,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 329 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 14:32:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2022-02-18 14:32:13,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 894. [2022-02-18 14:32:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 2.677491601343785) internal successors, (2391), 893 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:13,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 2391 transitions. [2022-02-18 14:32:13,549 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 2391 transitions. Word has length 72 [2022-02-18 14:32:13,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:32:13,550 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 2391 transitions. [2022-02-18 14:32:13,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:13,550 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 2391 transitions. [2022-02-18 14:32:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-18 14:32:13,564 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:32:13,564 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:32:13,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-18 14:32:13,564 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:32:13,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:32:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash 914260433, now seen corresponding path program 3 times [2022-02-18 14:32:13,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:32:13,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806692213] [2022-02-18 14:32:13,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:32:13,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:32:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:32:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:32:13,618 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:32:13,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806692213] [2022-02-18 14:32:13,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806692213] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-18 14:32:13,618 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-18 14:32:13,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-18 14:32:13,618 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080294454] [2022-02-18 14:32:13,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-18 14:32:13,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-18 14:32:13,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:32:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-18 14:32:13,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-18 14:32:13,619 INFO L87 Difference]: Start difference. First operand 894 states and 2391 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:32:13,734 INFO L93 Difference]: Finished difference Result 1322 states and 3564 transitions. [2022-02-18 14:32:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-18 14:32:13,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-02-18 14:32:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:32:13,739 INFO L225 Difference]: With dead ends: 1322 [2022-02-18 14:32:13,739 INFO L226 Difference]: Without dead ends: 1322 [2022-02-18 14:32:13,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-18 14:32:13,742 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 56 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:32:13,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 276 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-18 14:32:13,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-02-18 14:32:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 798. [2022-02-18 14:32:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 2.64366373902133) internal successors, (2107), 797 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 2107 transitions. [2022-02-18 14:32:13,763 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 2107 transitions. Word has length 72 [2022-02-18 14:32:13,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:32:13,764 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 2107 transitions. [2022-02-18 14:32:13,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:32:13,764 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 2107 transitions. [2022-02-18 14:32:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:32:13,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:32:13,769 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:32:13,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-18 14:32:13,770 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:32:13,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:32:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash 955660810, now seen corresponding path program 2 times [2022-02-18 14:32:13,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:32:13,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565871780] [2022-02-18 14:32:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:32:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:32:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:32:14,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:32:14,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:32:14,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565871780] [2022-02-18 14:32:14,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565871780] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:32:14,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798780361] [2022-02-18 14:32:14,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:32:14,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:32:14,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:32:14,694 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) [2022-02-18 14:32:14,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-18 14:32:14,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:32:14,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:32:14,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-18 14:32:14,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:32:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:32:15,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:32:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:32:18,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798780361] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:32:18,712 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:32:18,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 20] total 44 [2022-02-18 14:32:18,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862012818] [2022-02-18 14:32:18,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:32:18,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-18 14:32:18,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:32:18,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-18 14:32:18,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2022-02-18 14:32:18,714 INFO L87 Difference]: Start difference. First operand 798 states and 2107 transitions. Second operand has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:09,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:33:09,741 INFO L93 Difference]: Finished difference Result 4529 states and 11574 transitions. [2022-02-18 14:33:09,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-02-18 14:33:09,742 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:33:09,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:33:09,763 INFO L225 Difference]: With dead ends: 4529 [2022-02-18 14:33:09,763 INFO L226 Difference]: Without dead ends: 4064 [2022-02-18 14:33:09,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8583 ImplicationChecksByTransitivity, 42.7s TimeCoverageRelationStatistics Valid=3920, Invalid=20572, Unknown=0, NotChecked=0, Total=24492 [2022-02-18 14:33:09,775 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 2089 mSDsluCounter, 4708 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 4514 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-02-18 14:33:09,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2089 Valid, 4514 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-02-18 14:33:09,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2022-02-18 14:33:09,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 1146. [2022-02-18 14:33:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.7606986899563317) internal successors, (3161), 1145 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 3161 transitions. [2022-02-18 14:33:09,862 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 3161 transitions. Word has length 74 [2022-02-18 14:33:09,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:33:09,863 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 3161 transitions. [2022-02-18 14:33:09,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:09,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 3161 transitions. [2022-02-18 14:33:09,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:33:09,865 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:33:09,865 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:33:09,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-18 14:33:10,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:33:10,070 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:33:10,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:33:10,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1329799292, now seen corresponding path program 3 times [2022-02-18 14:33:10,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:33:10,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276128070] [2022-02-18 14:33:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:33:10,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:33:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:33:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:33:10,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:33:10,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276128070] [2022-02-18 14:33:10,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276128070] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:33:10,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126095751] [2022-02-18 14:33:10,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:33:10,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:33:10,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:33:10,772 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) [2022-02-18 14:33:10,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-18 14:33:10,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-18 14:33:10,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:33:10,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-18 14:33:10,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:33:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:33:11,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:33:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:33:13,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126095751] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:33:13,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:33:13,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 35 [2022-02-18 14:33:13,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768882212] [2022-02-18 14:33:13,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:33:13,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-02-18 14:33:13,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:33:13,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-02-18 14:33:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2022-02-18 14:33:13,822 INFO L87 Difference]: Start difference. First operand 1146 states and 3161 transitions. Second operand has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:25,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:33:25,076 INFO L93 Difference]: Finished difference Result 3667 states and 9608 transitions. [2022-02-18 14:33:25,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-18 14:33:25,077 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:33:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:33:25,087 INFO L225 Difference]: With dead ends: 3667 [2022-02-18 14:33:25,087 INFO L226 Difference]: Without dead ends: 3037 [2022-02-18 14:33:25,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1330, Invalid=7042, Unknown=0, NotChecked=0, Total=8372 [2022-02-18 14:33:25,089 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 1366 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-18 14:33:25,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 2721 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-18 14:33:25,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2022-02-18 14:33:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 1086. [2022-02-18 14:33:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 2.713364055299539) internal successors, (2944), 1085 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:25,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 2944 transitions. [2022-02-18 14:33:25,141 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 2944 transitions. Word has length 74 [2022-02-18 14:33:25,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:33:25,141 INFO L470 AbstractCegarLoop]: Abstraction has 1086 states and 2944 transitions. [2022-02-18 14:33:25,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:25,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 2944 transitions. [2022-02-18 14:33:25,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-02-18 14:33:25,144 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:33:25,144 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:33:25,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-18 14:33:25,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:33:25,361 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:33:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:33:25,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2090126194, now seen corresponding path program 4 times [2022-02-18 14:33:25,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:33:25,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937879888] [2022-02-18 14:33:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:33:25,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:33:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:33:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:33:26,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:33:26,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937879888] [2022-02-18 14:33:26,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937879888] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:33:26,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227895945] [2022-02-18 14:33:26,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:33:26,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:33:26,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:33:26,685 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) [2022-02-18 14:33:26,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-18 14:33:26,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:33:26,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:33:26,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-18 14:33:26,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:33:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:33:27,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:33:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:33:31,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227895945] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:33:31,320 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:33:31,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 18] total 36 [2022-02-18 14:33:31,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408744010] [2022-02-18 14:33:31,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:33:31,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-18 14:33:31,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:33:31,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-18 14:33:31,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1050, Unknown=0, NotChecked=0, Total=1260 [2022-02-18 14:33:31,322 INFO L87 Difference]: Start difference. First operand 1086 states and 2944 transitions. Second operand has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:48,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:33:48,867 INFO L93 Difference]: Finished difference Result 3390 states and 9035 transitions. [2022-02-18 14:33:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-18 14:33:48,867 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-02-18 14:33:48,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:33:48,876 INFO L225 Difference]: With dead ends: 3390 [2022-02-18 14:33:48,876 INFO L226 Difference]: Without dead ends: 2775 [2022-02-18 14:33:48,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2586 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=1260, Invalid=6930, Unknown=0, NotChecked=0, Total=8190 [2022-02-18 14:33:48,878 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 1174 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:33:48,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 2172 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1216 Invalid, 0 Unknown, 1 Unchecked, 5.4s Time] [2022-02-18 14:33:48,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-02-18 14:33:48,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 1226. [2022-02-18 14:33:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 2.746938775510204) internal successors, (3365), 1225 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:48,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 3365 transitions. [2022-02-18 14:33:48,905 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 3365 transitions. Word has length 74 [2022-02-18 14:33:48,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:33:48,905 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 3365 transitions. [2022-02-18 14:33:48,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.555555555555555) internal successors, (164), 36 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:48,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 3365 transitions. [2022-02-18 14:33:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-02-18 14:33:48,907 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:33:48,908 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:33:48,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-18 14:33:49,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:33:49,115 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:33:49,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:33:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1335703416, now seen corresponding path program 4 times [2022-02-18 14:33:49,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:33:49,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845766100] [2022-02-18 14:33:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:33:49,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:33:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:33:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:33:49,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:33:49,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845766100] [2022-02-18 14:33:49,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845766100] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:33:49,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973205308] [2022-02-18 14:33:49,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:33:49,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:33:49,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:33:49,454 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) [2022-02-18 14:33:49,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-18 14:33:49,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:33:49,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:33:49,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-18 14:33:49,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:33:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:33:50,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:33:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:33:51,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973205308] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:33:51,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:33:51,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 18] total 41 [2022-02-18 14:33:51,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125448272] [2022-02-18 14:33:51,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:33:51,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:33:51,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:33:51,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:33:51,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:33:51,506 INFO L87 Difference]: Start difference. First operand 1226 states and 3365 transitions. Second operand has 41 states, 41 states have (on average 4.439024390243903) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:59,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:33:59,512 INFO L93 Difference]: Finished difference Result 4144 states and 11312 transitions. [2022-02-18 14:33:59,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-18 14:33:59,512 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.439024390243903) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have 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 [2022-02-18 14:33:59,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:33:59,521 INFO L225 Difference]: With dead ends: 4144 [2022-02-18 14:33:59,521 INFO L226 Difference]: Without dead ends: 3655 [2022-02-18 14:33:59,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4797 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2787, Invalid=11975, Unknown=0, NotChecked=0, Total=14762 [2022-02-18 14:33:59,524 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1293 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:33:59,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 3335 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1716 Invalid, 0 Unknown, 123 Unchecked, 2.5s Time] [2022-02-18 14:33:59,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2022-02-18 14:33:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 1370. [2022-02-18 14:33:59,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 2.77063550036523) internal successors, (3793), 1369 states have internal predecessors, (3793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 3793 transitions. [2022-02-18 14:33:59,561 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 3793 transitions. Word has length 76 [2022-02-18 14:33:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:33:59,561 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 3793 transitions. [2022-02-18 14:33:59,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.439024390243903) internal successors, (182), 41 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:33:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 3793 transitions. [2022-02-18 14:33:59,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:33:59,565 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:33:59,565 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:33:59,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-18 14:33:59,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:33:59,783 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:33:59,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:33:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1260039537, now seen corresponding path program 5 times [2022-02-18 14:33:59,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:33:59,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065917613] [2022-02-18 14:33:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:33:59,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:33:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:34:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:34:00,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:34:00,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065917613] [2022-02-18 14:34:00,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065917613] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:34:00,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983493674] [2022-02-18 14:34:00,985 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:34:00,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:34:00,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:34:00,987 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) [2022-02-18 14:34:00,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-18 14:34:01,158 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-18 14:34:01,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:34:01,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-18 14:34:01,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:34:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:34:02,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:34:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:34:09,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983493674] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:34:09,810 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:34:09,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 41 [2022-02-18 14:34:09,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694678297] [2022-02-18 14:34:09,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:34:09,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:34:09,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:34:09,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:34:09,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:34:09,813 INFO L87 Difference]: Start difference. First operand 1370 states and 3793 transitions. Second operand has 41 states, 41 states have (on average 4.219512195121951) internal successors, (173), 41 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:35:16,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:35:16,210 INFO L93 Difference]: Finished difference Result 4813 states and 12652 transitions. [2022-02-18 14:35:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-18 14:35:16,211 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.219512195121951) internal successors, (173), 41 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-18 14:35:16,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:35:16,218 INFO L225 Difference]: With dead ends: 4813 [2022-02-18 14:35:16,218 INFO L226 Difference]: Without dead ends: 3748 [2022-02-18 14:35:16,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6305 ImplicationChecksByTransitivity, 59.4s TimeCoverageRelationStatistics Valid=2645, Invalid=15984, Unknown=3, NotChecked=0, Total=18632 [2022-02-18 14:35:16,220 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 1662 mSDsluCounter, 4141 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 3999 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-02-18 14:35:16,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1662 Valid, 3999 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2022-02-18 14:35:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-02-18 14:35:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 1702. [2022-02-18 14:35:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 2.802469135802469) internal successors, (4767), 1701 states have internal predecessors, (4767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:35:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 4767 transitions. [2022-02-18 14:35:16,287 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 4767 transitions. Word has length 77 [2022-02-18 14:35:16,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:35:16,288 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 4767 transitions. [2022-02-18 14:35:16,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.219512195121951) internal successors, (173), 41 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:35:16,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 4767 transitions. [2022-02-18 14:35:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:35:16,291 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:35:16,291 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:35:16,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-02-18 14:35:16,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:35:16,512 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:35:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:35:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1044628751, now seen corresponding path program 6 times [2022-02-18 14:35:16,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:35:16,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964808890] [2022-02-18 14:35:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:35:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:35:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:35:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:35:19,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:35:19,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964808890] [2022-02-18 14:35:19,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964808890] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:35:19,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253418786] [2022-02-18 14:35:19,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:35:19,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:35:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:35:19,699 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) [2022-02-18 14:35:19,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-18 14:35:19,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-18 14:35:19,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:35:19,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-18 14:35:19,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:35:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:35:21,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:35:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:35:26,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253418786] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:35:26,739 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:35:26,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 19] total 44 [2022-02-18 14:35:26,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589694991] [2022-02-18 14:35:26,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:35:26,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-18 14:35:26,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:35:26,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-18 14:35:26,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1583, Unknown=0, NotChecked=0, Total=1892 [2022-02-18 14:35:26,740 INFO L87 Difference]: Start difference. First operand 1702 states and 4767 transitions. Second operand has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:35:36,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:35:43,281 WARN L228 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 185 DAG size of output: 136 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:35:53,934 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 [] [2022-02-18 14:36:33,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:36:33,380 INFO L93 Difference]: Finished difference Result 5211 states and 13792 transitions. [2022-02-18 14:36:33,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-02-18 14:36:33,381 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-18 14:36:33,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:36:33,388 INFO L225 Difference]: With dead ends: 5211 [2022-02-18 14:36:33,388 INFO L226 Difference]: Without dead ends: 4035 [2022-02-18 14:36:33,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8465 ImplicationChecksByTransitivity, 54.6s TimeCoverageRelationStatistics Valid=3384, Invalid=21737, Unknown=1, NotChecked=0, Total=25122 [2022-02-18 14:36:33,390 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 2004 mSDsluCounter, 5330 mSDsCounter, 0 mSdLazyCounter, 2601 mSolverCounterSat, 227 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 5164 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 2601 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:36:33,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2004 Valid, 5164 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 2601 Invalid, 2 Unknown, 0 Unchecked, 18.5s Time] [2022-02-18 14:36:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2022-02-18 14:36:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 2062. [2022-02-18 14:36:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2061 states have (on average 2.8107714701601165) internal successors, (5793), 2061 states have internal predecessors, (5793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:36:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 5793 transitions. [2022-02-18 14:36:33,433 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 5793 transitions. Word has length 77 [2022-02-18 14:36:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:36:33,433 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 5793 transitions. [2022-02-18 14:36:33,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:36:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 5793 transitions. [2022-02-18 14:36:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:36:33,436 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:36:33,436 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:36:33,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-18 14:36:33,670 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,SelfDestructingSolverStorable11 [2022-02-18 14:36:33,670 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:36:33,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:36:33,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1503926061, now seen corresponding path program 7 times [2022-02-18 14:36:33,671 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:36:33,671 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807492295] [2022-02-18 14:36:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:36:33,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:36:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:36:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:36:34,336 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:36:34,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807492295] [2022-02-18 14:36:34,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807492295] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:36:34,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898174691] [2022-02-18 14:36:34,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-18 14:36:34,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:36:34,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:36:34,337 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) [2022-02-18 14:36:34,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-18 14:36:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:36:34,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-18 14:36:34,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:36:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:36:36,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:36:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:36:40,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898174691] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:36:40,293 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:36:40,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 21] total 52 [2022-02-18 14:36:40,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193611577] [2022-02-18 14:36:40,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:36:40,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-02-18 14:36:40,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:36:40,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-02-18 14:36:40,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=2236, Unknown=0, NotChecked=0, Total=2652 [2022-02-18 14:36:40,301 INFO L87 Difference]: Start difference. First operand 2062 states and 5793 transitions. Second operand has 52 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 52 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:38:25,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:38:25,334 INFO L93 Difference]: Finished difference Result 7274 states and 19572 transitions. [2022-02-18 14:38:25,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-02-18 14:38:25,335 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 52 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-18 14:38:25,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:38:25,363 INFO L225 Difference]: With dead ends: 7274 [2022-02-18 14:38:25,363 INFO L226 Difference]: Without dead ends: 6293 [2022-02-18 14:38:25,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20026 ImplicationChecksByTransitivity, 94.8s TimeCoverageRelationStatistics Valid=7006, Invalid=45206, Unknown=0, NotChecked=0, Total=52212 [2022-02-18 14:38:25,379 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 2388 mSDsluCounter, 4764 mSDsCounter, 0 mSdLazyCounter, 3224 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 3547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 3224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-02-18 14:38:25,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2388 Valid, 4742 Invalid, 3547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 3224 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-02-18 14:38:25,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6293 states. [2022-02-18 14:38:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6293 to 2422. [2022-02-18 14:38:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2421 states have (on average 2.87938868236266) internal successors, (6971), 2421 states have internal predecessors, (6971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:38:25,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 6971 transitions. [2022-02-18 14:38:25,441 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 6971 transitions. Word has length 77 [2022-02-18 14:38:25,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:38:25,442 INFO L470 AbstractCegarLoop]: Abstraction has 2422 states and 6971 transitions. [2022-02-18 14:38:25,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 52 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:38:25,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 6971 transitions. [2022-02-18 14:38:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-18 14:38:25,446 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:38:25,446 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-18 14:38:25,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-18 14:38:25,650 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,SelfDestructingSolverStorable12 [2022-02-18 14:38:25,650 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:38:25,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:38:25,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1514002547, now seen corresponding path program 8 times [2022-02-18 14:38:25,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:38:25,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466249096] [2022-02-18 14:38:25,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:38:25,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:38:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:38:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:38:26,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:38:26,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466249096] [2022-02-18 14:38:26,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466249096] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:38:26,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323156347] [2022-02-18 14:38:26,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-18 14:38:26,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:38:26,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:38:26,679 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) [2022-02-18 14:38:26,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-18 14:38:26,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-18 14:38:26,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:38:26,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2022-02-18 14:38:26,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:38:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:38:28,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:38:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:38:32,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323156347] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:38:32,265 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:38:32,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 40 [2022-02-18 14:38:32,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584629575] [2022-02-18 14:38:32,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:38:32,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-02-18 14:38:32,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:38:32,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-02-18 14:38:32,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1350, Unknown=0, NotChecked=0, Total=1560 [2022-02-18 14:38:32,267 INFO L87 Difference]: Start difference. First operand 2422 states and 6971 transitions. Second operand has 40 states, 40 states have (on average 3.8) internal successors, (152), 40 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:38:36,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:38:43,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:38:59,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:39:02,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:39:04,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:39:06,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:39:15,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:40:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:40:27,136 INFO L93 Difference]: Finished difference Result 7511 states and 20043 transitions. [2022-02-18 14:40:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2022-02-18 14:40:27,136 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.8) internal successors, (152), 40 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-18 14:40:27,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:40:27,148 INFO L225 Difference]: With dead ends: 7511 [2022-02-18 14:40:27,148 INFO L226 Difference]: Without dead ends: 6545 [2022-02-18 14:40:27,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15404 ImplicationChecksByTransitivity, 89.9s TimeCoverageRelationStatistics Valid=5591, Invalid=35821, Unknown=0, NotChecked=0, Total=41412 [2022-02-18 14:40:27,151 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 2166 mSDsluCounter, 5501 mSDsCounter, 0 mSdLazyCounter, 3168 mSolverCounterSat, 344 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 3515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 3168 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2022-02-18 14:40:27,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2166 Valid, 5474 Invalid, 3515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 3168 Invalid, 3 Unknown, 0 Unchecked, 28.4s Time] [2022-02-18 14:40:27,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6545 states. [2022-02-18 14:40:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6545 to 2650. [2022-02-18 14:40:27,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2649 states have (on average 2.924122310305776) internal successors, (7746), 2649 states have internal predecessors, (7746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:40:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 7746 transitions. [2022-02-18 14:40:27,244 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 7746 transitions. Word has length 77 [2022-02-18 14:40:27,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:40:27,244 INFO L470 AbstractCegarLoop]: Abstraction has 2650 states and 7746 transitions. [2022-02-18 14:40:27,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.8) internal successors, (152), 40 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:40:27,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 7746 transitions. [2022-02-18 14:40:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-18 14:40:27,249 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:40:27,249 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:40:27,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-18 14:40:27,463 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,SelfDestructingSolverStorable13 [2022-02-18 14:40:27,464 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:40:27,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:40:27,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1799553041, now seen corresponding path program 9 times [2022-02-18 14:40:27,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:40:27,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925279321] [2022-02-18 14:40:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:40:27,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:40:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:40:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:40:27,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:40:27,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925279321] [2022-02-18 14:40:27,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925279321] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:40:27,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032821160] [2022-02-18 14:40:27,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-18 14:40:27,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:40:27,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:40:27,945 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) [2022-02-18 14:40:27,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-18 14:40:28,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-18 14:40:28,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:40:28,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-18 14:40:28,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:40:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:40:29,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:40:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:40:31,611 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032821160] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:40:31,611 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:40:31,611 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 18] total 41 [2022-02-18 14:40:31,611 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873010286] [2022-02-18 14:40:31,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:40:31,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-18 14:40:31,611 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:40:31,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-18 14:40:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1388, Unknown=0, NotChecked=0, Total=1640 [2022-02-18 14:40:31,612 INFO L87 Difference]: Start difference. First operand 2650 states and 7746 transitions. Second operand has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:41:17,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:41:17,457 INFO L93 Difference]: Finished difference Result 8737 states and 23720 transitions. [2022-02-18 14:41:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-02-18 14:41:17,457 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-02-18 14:41:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:41:17,469 INFO L225 Difference]: With dead ends: 8737 [2022-02-18 14:41:17,469 INFO L226 Difference]: Without dead ends: 7375 [2022-02-18 14:41:17,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9638 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=2971, Invalid=23761, Unknown=0, NotChecked=0, Total=26732 [2022-02-18 14:41:17,473 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 2030 mSDsluCounter, 4410 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-02-18 14:41:17,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2030 Valid, 4290 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-02-18 14:41:17,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2022-02-18 14:41:17,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 3130. [2022-02-18 14:41:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3129 states have (on average 2.975391498881432) internal successors, (9310), 3129 states have internal predecessors, (9310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:41:17,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 9310 transitions. [2022-02-18 14:41:17,550 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 9310 transitions. Word has length 78 [2022-02-18 14:41:17,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:41:17,550 INFO L470 AbstractCegarLoop]: Abstraction has 3130 states and 9310 transitions. [2022-02-18 14:41:17,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.585365853658536) internal successors, (188), 41 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:41:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 9310 transitions. [2022-02-18 14:41:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-18 14:41:17,556 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:41:17,556 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:41:17,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-02-18 14:41:17,771 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,SelfDestructingSolverStorable14 [2022-02-18 14:41:17,771 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:41:17,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:41:17,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1217995345, now seen corresponding path program 10 times [2022-02-18 14:41:17,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:41:17,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217392858] [2022-02-18 14:41:17,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:41:17,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:41:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:41:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:41:18,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:41:18,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217392858] [2022-02-18 14:41:18,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217392858] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:41:18,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807706532] [2022-02-18 14:41:18,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-18 14:41:18,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:41:18,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:41:18,683 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) [2022-02-18 14:41:18,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-18 14:41:18,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-18 14:41:18,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:41:18,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-18 14:41:18,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:41:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:41:20,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:41:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:41:24,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807706532] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:41:24,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:41:24,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 47 [2022-02-18 14:41:24,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493533279] [2022-02-18 14:41:24,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:41:24,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-18 14:41:24,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:41:24,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-18 14:41:24,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1838, Unknown=0, NotChecked=0, Total=2162 [2022-02-18 14:41:24,702 INFO L87 Difference]: Start difference. First operand 3130 states and 9310 transitions. Second operand has 47 states, 47 states have (on average 3.702127659574468) internal successors, (174), 47 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:41:48,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:41:50,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:41:52,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:41:58,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:42:28,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:42:28,076 INFO L93 Difference]: Finished difference Result 8914 states and 24552 transitions. [2022-02-18 14:42:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-02-18 14:42:28,077 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.702127659574468) internal successors, (174), 47 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-02-18 14:42:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:42:28,089 INFO L225 Difference]: With dead ends: 8914 [2022-02-18 14:42:28,089 INFO L226 Difference]: Without dead ends: 7567 [2022-02-18 14:42:28,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9926 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=3788, Invalid=24942, Unknown=0, NotChecked=0, Total=28730 [2022-02-18 14:42:28,091 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 2192 mSDsluCounter, 4488 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 299 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 4429 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:42:28,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2192 Valid, 4429 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2530 Invalid, 1 Unknown, 0 Unchecked, 24.7s Time] [2022-02-18 14:42:28,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7567 states. [2022-02-18 14:42:28,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7567 to 3546. [2022-02-18 14:42:28,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 3545 states have (on average 2.9918194640338505) internal successors, (10606), 3545 states have internal predecessors, (10606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:42:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 10606 transitions. [2022-02-18 14:42:28,198 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 10606 transitions. Word has length 78 [2022-02-18 14:42:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:42:28,198 INFO L470 AbstractCegarLoop]: Abstraction has 3546 states and 10606 transitions. [2022-02-18 14:42:28,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.702127659574468) internal successors, (174), 47 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:42:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 10606 transitions. [2022-02-18 14:42:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-18 14:42:28,204 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:42:28,204 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:42:28,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-18 14:42:28,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-18 14:42:28,420 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:42:28,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:42:28,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1762627179, now seen corresponding path program 11 times [2022-02-18 14:42:28,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:42:28,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300996058] [2022-02-18 14:42:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:42:28,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:42:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:42:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:42:28,618 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:42:28,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300996058] [2022-02-18 14:42:28,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300996058] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:42:28,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650610638] [2022-02-18 14:42:28,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-18 14:42:28,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:42:28,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:42:28,620 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:42:28,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-18 14:42:28,683 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-18 14:42:28,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:42:28,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-18 14:42:28,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:42:29,099 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:42:29,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:42:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:42:29,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650610638] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:42:29,554 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:42:29,554 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 25 [2022-02-18 14:42:29,554 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290636999] [2022-02-18 14:42:29,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:42:29,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-18 14:42:29,554 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:42:29,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-18 14:42:29,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-02-18 14:42:29,555 INFO L87 Difference]: Start difference. First operand 3546 states and 10606 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:42:32,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-18 14:42:32,129 INFO L93 Difference]: Finished difference Result 8648 states and 24142 transitions. [2022-02-18 14:42:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-18 14:42:32,130 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-02-18 14:42:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-18 14:42:32,143 INFO L225 Difference]: With dead ends: 8648 [2022-02-18 14:42:32,144 INFO L226 Difference]: Without dead ends: 8648 [2022-02-18 14:42:32,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 135 SyntacticMatches, 8 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2175 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=968, Invalid=5838, Unknown=0, NotChecked=0, Total=6806 [2022-02-18 14:42:32,144 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1273 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-18 14:42:32,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1273 Valid, 2918 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-18 14:42:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8648 states. [2022-02-18 14:42:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8648 to 4298. [2022-02-18 14:42:32,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 3.0239702117756573) internal successors, (12994), 4297 states have internal predecessors, (12994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:42:32,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 12994 transitions. [2022-02-18 14:42:32,236 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 12994 transitions. Word has length 78 [2022-02-18 14:42:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-18 14:42:32,236 INFO L470 AbstractCegarLoop]: Abstraction has 4298 states and 12994 transitions. [2022-02-18 14:42:32,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:42:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 12994 transitions. [2022-02-18 14:42:32,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-18 14:42:32,244 INFO L506 BasicCegarLoop]: Found error trace [2022-02-18 14:42:32,245 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-18 14:42:32,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-02-18 14:42:32,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-18 14:42:32,476 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-18 14:42:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-18 14:42:32,476 INFO L85 PathProgramCache]: Analyzing trace with hash 63050411, now seen corresponding path program 12 times [2022-02-18 14:42:32,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-18 14:42:32,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326026531] [2022-02-18 14:42:32,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-18 14:42:32,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-18 14:42:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-18 14:42:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:42:34,227 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-18 14:42:34,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326026531] [2022-02-18 14:42:34,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326026531] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-18 14:42:34,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635006135] [2022-02-18 14:42:34,227 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-18 14:42:34,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:42:34,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-18 14:42:34,228 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-18 14:42:34,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-18 14:42:34,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-18 14:42:34,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-18 14:42:34,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-18 14:42:34,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-18 14:42:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:42:37,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-18 14:42:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-18 14:42:46,700 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635006135] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-18 14:42:46,700 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-18 14:42:46,700 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 22] total 55 [2022-02-18 14:42:46,700 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163529094] [2022-02-18 14:42:46,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-18 14:42:46,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-02-18 14:42:46,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-18 14:42:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-02-18 14:42:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=2545, Unknown=0, NotChecked=0, Total=2970 [2022-02-18 14:42:46,701 INFO L87 Difference]: Start difference. First operand 4298 states and 12994 transitions. Second operand has 55 states, 55 states have (on average 3.418181818181818) internal successors, (188), 55 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-18 14:42:51,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:43:02,462 WARN L228 SmtUtils]: Spent 10.13s on a formula simplification. DAG size of input: 161 DAG size of output: 154 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:43:17,161 WARN L228 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 149 DAG size of output: 142 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:43:33,360 WARN L228 SmtUtils]: Spent 11.63s on a formula simplification. DAG size of input: 170 DAG size of output: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:43:50,264 WARN L228 SmtUtils]: Spent 14.65s on a formula simplification. DAG size of input: 185 DAG size of output: 159 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:44:02,481 WARN L228 SmtUtils]: Spent 10.47s on a formula simplification. DAG size of input: 192 DAG size of output: 166 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:44:04,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:44:17,512 WARN L228 SmtUtils]: Spent 10.81s on a formula simplification. DAG size of input: 181 DAG size of output: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:44:29,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:44:35,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:44:37,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:45:17,594 WARN L228 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 151 DAG size of output: 131 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:45:37,896 WARN L228 SmtUtils]: Spent 9.36s on a formula simplification. DAG size of input: 155 DAG size of output: 140 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:45:44,818 WARN L228 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 155 DAG size of output: 127 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:45:52,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-18 14:46:00,461 WARN L228 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 166 DAG size of output: 151 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:46:22,133 WARN L228 SmtUtils]: Spent 10.85s on a formula simplification. DAG size of input: 177 DAG size of output: 154 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-18 14:46:31,235 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 [] Received shutdown request... [2022-02-18 14:46:32,050 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 [2022-02-18 14:46:32,070 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-18 14:46:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-18 14:46:32,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4196 ImplicationChecksByTransitivity, 202.6s TimeCoverageRelationStatistics Valid=1667, Invalid=10760, Unknown=5, NotChecked=0, Total=12432 [2022-02-18 14:46:32,260 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 807 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 187 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2022-02-18 14:46:32,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 2191 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1679 Invalid, 3 Unknown, 0 Unchecked, 31.7s Time] [2022-02-18 14:46:32,261 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-18 14:46:32,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-18 14:46:32,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-18 14:46:32,462 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (4298states) and FLOYD_HOARE automaton (currently 68 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. [2022-02-18 14:46:32,464 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-18 14:46:32,464 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-18 14:46:32,466 INFO L732 BasicCegarLoop]: Path program histogram: [12, 4, 1, 1] [2022-02-18 14:46:32,467 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-18 14:46:32,467 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-18 14:46:32,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 02:46:32 BasicIcfg [2022-02-18 14:46:32,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-18 14:46:32,469 INFO L158 Benchmark]: Toolchain (without parser) took 876885.86ms. Allocated memory was 213.9MB in the beginning and 370.1MB in the end (delta: 156.2MB). Free memory was 158.9MB in the beginning and 253.5MB in the end (delta: -94.6MB). Peak memory consumption was 62.8MB. Max. memory is 8.0GB. [2022-02-18 14:46:32,469 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 213.9MB. Free memory is still 175.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-18 14:46:32,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.92ms. Allocated memory is still 213.9MB. Free memory was 188.3MB in the beginning and 184.8MB in the end (delta: 3.5MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-02-18 14:46:32,472 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.70ms. Allocated memory is still 213.9MB. Free memory was 184.8MB in the beginning and 183.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-18 14:46:32,472 INFO L158 Benchmark]: Boogie Preprocessor took 19.65ms. Allocated memory is still 213.9MB. Free memory was 183.3MB in the beginning and 181.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-18 14:46:32,472 INFO L158 Benchmark]: RCFGBuilder took 314.89ms. Allocated memory is still 213.9MB. Free memory was 181.9MB in the beginning and 168.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-18 14:46:32,472 INFO L158 Benchmark]: TraceAbstraction took 876261.99ms. Allocated memory was 213.9MB in the beginning and 370.1MB in the end (delta: 156.2MB). Free memory was 168.0MB in the beginning and 253.5MB in the end (delta: -85.5MB). Peak memory consumption was 70.5MB. Max. memory is 8.0GB. [2022-02-18 14:46:32,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 213.9MB. Free memory is still 175.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 222.92ms. Allocated memory is still 213.9MB. Free memory was 188.3MB in the beginning and 184.8MB in the end (delta: 3.5MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.70ms. Allocated memory is still 213.9MB. Free memory was 184.8MB in the beginning and 183.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.65ms. Allocated memory is still 213.9MB. Free memory was 183.3MB in the beginning and 181.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 314.89ms. Allocated memory is still 213.9MB. Free memory was 181.9MB in the beginning and 168.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 876261.99ms. Allocated memory was 213.9MB in the beginning and 370.1MB in the end (delta: 156.2MB). Free memory was 168.0MB in the beginning and 253.5MB in the end (delta: -85.5MB). Peak memory consumption was 70.5MB. 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: 95]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4298states) and FLOYD_HOARE automaton (currently 68 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. - TimeoutResultAtElement [Line: 89]: 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 (4298states) and FLOYD_HOARE automaton (currently 68 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. - TimeoutResultAtElement [Line: 90]: 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 (4298states) and FLOYD_HOARE automaton (currently 68 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 112 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 876.2s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.1s, AutomataDifference: 788.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 22738 SdHoareTripleChecker+Valid, 162.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22738 mSDsluCounter, 50195 SdHoareTripleChecker+Invalid, 156.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 295 IncrementalHoareTripleChecker+Unchecked, 50690 mSDsCounter, 2919 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27603 IncrementalHoareTripleChecker+Invalid, 30826 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2919 mSolverCounterUnsat, 2723 mSDtfsCounter, 27603 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3679 GetRequests, 1766 SyntacticMatches, 53 SemanticMatches, 1859 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 98728 ImplicationChecksByTransitivity, 667.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4298occurred in iteration=17, InterpolantAutomatonStates: 1505, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 17 MinimizatonAttempts, 36660 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 80.9s InterpolantComputationTime, 2386 NumberOfCodeBlocks, 2386 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 3397 ConstructedInterpolants, 28 QuantifiedInterpolants, 92647 SizeOfPredicates, 214 NumberOfNonLiveVariables, 2362 ConjunctsInSsa, 425 ConjunctsInUnsatCore, 46 InterpolantComputations, 5 PerfectInterpolantSequences, 23/408 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