/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 17:09:22,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 17:09:22,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 17:09:22,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-21 17:09:22,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-21 17:09:22,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-21 17:09:22,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-21 17:09:22,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-21 17:09:22,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-21 17:09:22,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-21 17:09:22,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-21 17:09:22,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-21 17:09:22,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 17:09:22,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 17:09:22,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 17:09:22,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 17:09:22,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 17:09:22,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 17:09:22,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 17:09:22,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 17:09:22,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 17:09:22,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 17:09:22,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 17:09:22,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 17:09:22,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 17:09:22,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 17:09:22,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 17:09:22,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 17:09:22,134 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-Delay.epf [2021-08-21 17:09:22,162 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 17:09:22,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 17:09:22,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 17:09:22,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 17:09:22,166 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 17:09:22,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 17:09:22,166 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 17:09:22,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 17:09:22,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 17:09:22,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 17:09:22,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 17:09:22,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 17:09:22,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 17:09:22,168 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 17:09:22,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 17:09:22,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 17:09:22,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 17:09:22,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 17:09:22,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 17:09:22,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 17:09:22,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 17:09:22,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:09:22,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 17:09:22,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 17:09:22,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 17:09:22,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 17:09:22,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 17:09:22,170 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 17:09:22,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 17:09:22,170 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 17:09:22,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 17:09:22,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 17:09:22,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 17:09:22,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 17:09:22,536 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 17:09:22,537 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 17:09:22,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2021-08-21 17:09:22,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a30379550/2e620aa7aa9f49dd9f20f3f375412285/FLAGe902df405 [2021-08-21 17:09:23,179 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 17:09:23,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2021-08-21 17:09:23,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a30379550/2e620aa7aa9f49dd9f20f3f375412285/FLAGe902df405 [2021-08-21 17:09:23,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a30379550/2e620aa7aa9f49dd9f20f3f375412285 [2021-08-21 17:09:23,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 17:09:23,436 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 17:09:23,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 17:09:23,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 17:09:23,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 17:09:23,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:23,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc5845a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23, skipping insertion in model container [2021-08-21 17:09:23,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:23,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 17:09:23,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 17:09:23,609 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i[949,962] [2021-08-21 17:09:23,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:09:23,777 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 17:09:23,792 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i[949,962] [2021-08-21 17:09:23,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 17:09:23,892 INFO L208 MainTranslator]: Completed translation [2021-08-21 17:09:23,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23 WrapperNode [2021-08-21 17:09:23,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 17:09:23,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 17:09:23,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 17:09:23,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 17:09:23,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:23,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:23,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 17:09:23,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 17:09:23,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 17:09:23,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 17:09:23,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:23,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:23,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:23,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:23,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:23,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:23,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:23,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 17:09:23,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 17:09:23,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 17:09:23,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 17:09:23,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23" (1/1) ... [2021-08-21 17:09:24,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 17:09:24,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 17:09:24,026 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) [2021-08-21 17:09:24,049 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 [2021-08-21 17:09:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 17:09:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 17:09:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 17:09:24,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 17:09:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 17:09:24,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 17:09:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 17:09:24,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 17:09:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 17:09:24,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 17:09:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 17:09:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 17:09:24,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 17:09:24,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 17:09:24,072 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 17:09:24,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 17:09:24,450 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 17:09:24,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:09:24 BoogieIcfgContainer [2021-08-21 17:09:24,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 17:09:24,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 17:09:24,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 17:09:24,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 17:09:24,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:09:23" (1/3) ... [2021-08-21 17:09:24,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43375d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:09:24, skipping insertion in model container [2021-08-21 17:09:24,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:09:23" (2/3) ... [2021-08-21 17:09:24,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43375d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:09:24, skipping insertion in model container [2021-08-21 17:09:24,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:09:24" (3/3) ... [2021-08-21 17:09:24,461 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2021-08-21 17:09:24,466 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 17:09:24,467 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 17:09:24,467 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 17:09:24,467 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 17:09:24,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,511 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,512 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,513 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,515 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,515 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,519 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,520 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,520 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,520 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,521 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,521 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,521 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,521 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,522 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,522 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,523 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,523 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,523 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,523 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,526 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,527 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,527 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,527 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,539 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,539 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 17:09:24,544 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 17:09:24,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 17:09:24,600 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-21 17:09:24,600 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 17:09:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 4768 states have (on average 2.010696308724832) internal successors, (9587), 5558 states have internal predecessors, (9587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:25,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-21 17:09:25,191 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:25,191 INFO L512 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] [2021-08-21 17:09:25,192 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:09:25,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:25,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1061825978, now seen corresponding path program 1 times [2021-08-21 17:09:25,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:25,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955089040] [2021-08-21 17:09:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:25,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:09:25,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:25,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955089040] [2021-08-21 17:09:25,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955089040] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:25,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:25,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:09:25,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971925550] [2021-08-21 17:09:25,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:09:25,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:25,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:09:25,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:09:25,636 INFO L87 Difference]: Start difference. First operand has 5559 states, 4768 states have (on average 2.010696308724832) internal successors, (9587), 5558 states have internal predecessors, (9587), 0 states have call successors, (0), 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 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:25,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:25,982 INFO L93 Difference]: Finished difference Result 6343 states and 11078 transitions. [2021-08-21 17:09:25,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:09:25,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-08-21 17:09:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:26,040 INFO L225 Difference]: With dead ends: 6343 [2021-08-21 17:09:26,040 INFO L226 Difference]: Without dead ends: 2412 [2021-08-21 17:09:26,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 210.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:09:26,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-08-21 17:09:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-08-21 17:09:26,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2377 states have (on average 2.1741691207404292) internal successors, (5168), 2411 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 5168 transitions. [2021-08-21 17:09:26,199 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 5168 transitions. Word has length 49 [2021-08-21 17:09:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:26,200 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 5168 transitions. [2021-08-21 17:09:26,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 5168 transitions. [2021-08-21 17:09:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-21 17:09:26,203 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:26,204 INFO L512 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] [2021-08-21 17:09:26,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 17:09:26,204 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:09:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:26,205 INFO L82 PathProgramCache]: Analyzing trace with hash -478032505, now seen corresponding path program 1 times [2021-08-21 17:09:26,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:26,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504470253] [2021-08-21 17:09:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:26,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:09:26,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:26,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504470253] [2021-08-21 17:09:26,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504470253] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:26,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:26,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:09:26,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283360833] [2021-08-21 17:09:26,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:09:26,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:26,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:09:26,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:09:26,422 INFO L87 Difference]: Start difference. First operand 2412 states and 5168 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:26,771 INFO L93 Difference]: Finished difference Result 3806 states and 9047 transitions. [2021-08-21 17:09:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 17:09:26,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-08-21 17:09:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:26,785 INFO L225 Difference]: With dead ends: 3806 [2021-08-21 17:09:26,785 INFO L226 Difference]: Without dead ends: 2494 [2021-08-21 17:09:26,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 232.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:09:26,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2021-08-21 17:09:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2070. [2021-08-21 17:09:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 2035 states have (on average 2.211302211302211) internal successors, (4500), 2069 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 4500 transitions. [2021-08-21 17:09:26,841 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 4500 transitions. Word has length 51 [2021-08-21 17:09:26,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:26,842 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 4500 transitions. [2021-08-21 17:09:26,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 4500 transitions. [2021-08-21 17:09:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-21 17:09:26,848 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:26,848 INFO L512 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] [2021-08-21 17:09:26,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 17:09:26,849 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:09:26,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:26,856 INFO L82 PathProgramCache]: Analyzing trace with hash 803761480, now seen corresponding path program 1 times [2021-08-21 17:09:26,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:26,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470170374] [2021-08-21 17:09:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:26,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:09:27,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:27,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470170374] [2021-08-21 17:09:27,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470170374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:27,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:27,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:09:27,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868688105] [2021-08-21 17:09:27,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:09:27,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:27,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:09:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:09:27,003 INFO L87 Difference]: Start difference. First operand 2070 states and 4500 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:27,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:27,263 INFO L93 Difference]: Finished difference Result 3114 states and 7070 transitions. [2021-08-21 17:09:27,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 17:09:27,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-08-21 17:09:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:27,272 INFO L225 Difference]: With dead ends: 3114 [2021-08-21 17:09:27,272 INFO L226 Difference]: Without dead ends: 1768 [2021-08-21 17:09:27,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 207.3ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-08-21 17:09:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-08-21 17:09:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1762. [2021-08-21 17:09:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1734 states have (on average 2.154555940023068) internal successors, (3736), 1761 states have internal predecessors, (3736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 3736 transitions. [2021-08-21 17:09:27,314 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 3736 transitions. Word has length 53 [2021-08-21 17:09:27,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:27,314 INFO L470 AbstractCegarLoop]: Abstraction has 1762 states and 3736 transitions. [2021-08-21 17:09:27,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:27,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 3736 transitions. [2021-08-21 17:09:27,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-21 17:09:27,317 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:27,317 INFO L512 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] [2021-08-21 17:09:27,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 17:09:27,318 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:09:27,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:27,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1620999016, now seen corresponding path program 1 times [2021-08-21 17:09:27,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:27,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633582481] [2021-08-21 17:09:27,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:27,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:09:27,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:27,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633582481] [2021-08-21 17:09:27,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633582481] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:27,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:27,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:09:27,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533415872] [2021-08-21 17:09:27,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:09:27,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:27,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:09:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:09:27,443 INFO L87 Difference]: Start difference. First operand 1762 states and 3736 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:27,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:27,546 INFO L93 Difference]: Finished difference Result 1938 states and 4308 transitions. [2021-08-21 17:09:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:09:27,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-08-21 17:09:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:27,554 INFO L225 Difference]: With dead ends: 1938 [2021-08-21 17:09:27,554 INFO L226 Difference]: Without dead ends: 1428 [2021-08-21 17:09:27,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:09:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-08-21 17:09:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1428. [2021-08-21 17:09:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1408 states have (on average 2.205965909090909) internal successors, (3106), 1427 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 3106 transitions. [2021-08-21 17:09:27,588 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 3106 transitions. Word has length 54 [2021-08-21 17:09:27,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:27,588 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 3106 transitions. [2021-08-21 17:09:27,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 3106 transitions. [2021-08-21 17:09:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-21 17:09:27,592 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:27,592 INFO L512 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] [2021-08-21 17:09:27,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 17:09:27,593 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:09:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:27,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1053186439, now seen corresponding path program 1 times [2021-08-21 17:09:27,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:27,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508848706] [2021-08-21 17:09:27,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:27,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:09:27,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:27,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508848706] [2021-08-21 17:09:27,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508848706] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:27,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:27,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:09:27,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126894117] [2021-08-21 17:09:27,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:09:27,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:27,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:09:27,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:09:27,762 INFO L87 Difference]: Start difference. First operand 1428 states and 3106 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:27,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:27,899 INFO L93 Difference]: Finished difference Result 1848 states and 4076 transitions. [2021-08-21 17:09:27,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:09:27,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-08-21 17:09:27,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:27,904 INFO L225 Difference]: With dead ends: 1848 [2021-08-21 17:09:27,904 INFO L226 Difference]: Without dead ends: 768 [2021-08-21 17:09:27,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 130.0ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-21 17:09:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-08-21 17:09:27,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2021-08-21 17:09:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 748 states have (on average 2.199197860962567) internal successors, (1645), 767 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1645 transitions. [2021-08-21 17:09:27,922 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1645 transitions. Word has length 56 [2021-08-21 17:09:27,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:27,922 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 1645 transitions. [2021-08-21 17:09:27,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:27,922 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1645 transitions. [2021-08-21 17:09:27,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-21 17:09:27,923 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:27,924 INFO L512 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] [2021-08-21 17:09:27,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 17:09:27,924 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:09:27,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:27,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2115441121, now seen corresponding path program 1 times [2021-08-21 17:09:27,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:27,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38797051] [2021-08-21 17:09:27,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:27,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:09:28,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:28,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38797051] [2021-08-21 17:09:28,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38797051] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:28,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:28,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 17:09:28,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599141973] [2021-08-21 17:09:28,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 17:09:28,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 17:09:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 17:09:28,048 INFO L87 Difference]: Start difference. First operand 768 states and 1645 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:28,149 INFO L93 Difference]: Finished difference Result 961 states and 2033 transitions. [2021-08-21 17:09:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 17:09:28,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-08-21 17:09:28,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:28,152 INFO L225 Difference]: With dead ends: 961 [2021-08-21 17:09:28,152 INFO L226 Difference]: Without dead ends: 661 [2021-08-21 17:09:28,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 73.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 17:09:28,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-08-21 17:09:28,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2021-08-21 17:09:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 641 states have (on average 2.265210608424337) internal successors, (1452), 660 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1452 transitions. [2021-08-21 17:09:28,168 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1452 transitions. Word has length 57 [2021-08-21 17:09:28,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:28,169 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1452 transitions. [2021-08-21 17:09:28,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,170 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1452 transitions. [2021-08-21 17:09:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-21 17:09:28,171 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:28,171 INFO L512 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] [2021-08-21 17:09:28,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 17:09:28,171 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:09:28,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:28,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1879648782, now seen corresponding path program 1 times [2021-08-21 17:09:28,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:28,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542339625] [2021-08-21 17:09:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:28,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:09:28,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:28,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542339625] [2021-08-21 17:09:28,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542339625] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:28,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:28,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 17:09:28,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366502498] [2021-08-21 17:09:28,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 17:09:28,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:28,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 17:09:28,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 17:09:28,295 INFO L87 Difference]: Start difference. First operand 661 states and 1452 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:28,411 INFO L93 Difference]: Finished difference Result 670 states and 1407 transitions. [2021-08-21 17:09:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 17:09:28,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-21 17:09:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:28,413 INFO L225 Difference]: With dead ends: 670 [2021-08-21 17:09:28,413 INFO L226 Difference]: Without dead ends: 442 [2021-08-21 17:09:28,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 17:09:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-08-21 17:09:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-08-21 17:09:28,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 424 states have (on average 2.193396226415094) internal successors, (930), 441 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 930 transitions. [2021-08-21 17:09:28,423 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 930 transitions. Word has length 58 [2021-08-21 17:09:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:28,424 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 930 transitions. [2021-08-21 17:09:28,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 930 transitions. [2021-08-21 17:09:28,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-21 17:09:28,425 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:28,425 INFO L512 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] [2021-08-21 17:09:28,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 17:09:28,425 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:09:28,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:28,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1959358861, now seen corresponding path program 1 times [2021-08-21 17:09:28,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:28,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870216953] [2021-08-21 17:09:28,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:28,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:09:28,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:28,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870216953] [2021-08-21 17:09:28,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870216953] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:28,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:28,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:09:28,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593546345] [2021-08-21 17:09:28,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:09:28,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:09:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:09:28,541 INFO L87 Difference]: Start difference. First operand 442 states and 930 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:28,668 INFO L93 Difference]: Finished difference Result 334 states and 640 transitions. [2021-08-21 17:09:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 17:09:28,669 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-08-21 17:09:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:28,670 INFO L225 Difference]: With dead ends: 334 [2021-08-21 17:09:28,670 INFO L226 Difference]: Without dead ends: 198 [2021-08-21 17:09:28,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-21 17:09:28,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-08-21 17:09:28,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-08-21 17:09:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 189 states have (on average 1.8253968253968254) internal successors, (345), 197 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 345 transitions. [2021-08-21 17:09:28,687 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 345 transitions. Word has length 59 [2021-08-21 17:09:28,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:28,687 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 345 transitions. [2021-08-21 17:09:28,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 345 transitions. [2021-08-21 17:09:28,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-21 17:09:28,689 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 17:09:28,689 INFO L512 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] [2021-08-21 17:09:28,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 17:09:28,689 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 17:09:28,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 17:09:28,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1911532780, now seen corresponding path program 1 times [2021-08-21 17:09:28,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 17:09:28,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030221143] [2021-08-21 17:09:28,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 17:09:28,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 17:09:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 17:09:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 17:09:28,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 17:09:28,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030221143] [2021-08-21 17:09:28,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030221143] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 17:09:28,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 17:09:28,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 17:09:28,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107058878] [2021-08-21 17:09:28,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 17:09:28,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 17:09:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 17:09:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-21 17:09:28,826 INFO L87 Difference]: Start difference. First operand 198 states and 345 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 17:09:28,890 INFO L93 Difference]: Finished difference Result 162 states and 285 transitions. [2021-08-21 17:09:28,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 17:09:28,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-08-21 17:09:28,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 17:09:28,891 INFO L225 Difference]: With dead ends: 162 [2021-08-21 17:09:28,891 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 17:09:28,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 84.2ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-21 17:09:28,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 17:09:28,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 17:09:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 17:09:28,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-08-21 17:09:28,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 17:09:28,892 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 17:09:28,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 17:09:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 17:09:28,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 17:09:28,895 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 17:09:28,895 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 17:09:28,895 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 17:09:28,895 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 17:09:28,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 17:09:28,899 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 17:09:28,899 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 17:09:28,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:09:28 BasicIcfg [2021-08-21 17:09:28,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 17:09:28,902 INFO L168 Benchmark]: Toolchain (without parser) took 5465.43 ms. Allocated memory was 180.4 MB in the beginning and 224.4 MB in the end (delta: 44.0 MB). Free memory was 143.4 MB in the beginning and 175.7 MB in the end (delta: -32.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 8.0 GB. [2021-08-21 17:09:28,902 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 180.4 MB. Free memory is still 161.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:09:28,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.24 ms. Allocated memory is still 180.4 MB. Free memory was 143.2 MB in the beginning and 153.7 MB in the end (delta: -10.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-21 17:09:28,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.34 ms. Allocated memory is still 180.4 MB. Free memory was 153.7 MB in the beginning and 151.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:09:28,903 INFO L168 Benchmark]: Boogie Preprocessor took 32.30 ms. Allocated memory is still 180.4 MB. Free memory was 151.6 MB in the beginning and 150.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 17:09:28,903 INFO L168 Benchmark]: RCFGBuilder took 461.33 ms. Allocated memory is still 180.4 MB. Free memory was 150.6 MB in the beginning and 126.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-21 17:09:28,903 INFO L168 Benchmark]: TraceAbstraction took 4444.63 ms. Allocated memory was 180.4 MB in the beginning and 224.4 MB in the end (delta: 44.0 MB). Free memory was 126.0 MB in the beginning and 175.7 MB in the end (delta: -49.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 17:09:28,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 180.4 MB. Free memory is still 161.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 456.24 ms. Allocated memory is still 180.4 MB. Free memory was 143.2 MB in the beginning and 153.7 MB in the end (delta: -10.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 62.34 ms. Allocated memory is still 180.4 MB. Free memory was 153.7 MB in the beginning and 151.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.30 ms. Allocated memory is still 180.4 MB. Free memory was 151.6 MB in the beginning and 150.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 461.33 ms. Allocated memory is still 180.4 MB. Free memory was 150.6 MB in the beginning and 126.5 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4444.63 ms. Allocated memory was 180.4 MB in the beginning and 224.4 MB in the end (delta: 44.0 MB). Free memory was 126.0 MB in the beginning and 175.7 MB in the end (delta: -49.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 18424, positive: 17668, positive conditional: 17668, positive unconditional: 0, negative: 756, negative conditional: 756, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18345, positive: 17668, positive conditional: 0, positive unconditional: 17668, negative: 677, negative conditional: 0, negative unconditional: 677, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 658, positive: 637, positive conditional: 0, positive unconditional: 637, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 658, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 50, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18345, positive: 17031, positive conditional: 0, positive unconditional: 17031, negative: 656, negative conditional: 0, negative unconditional: 656, unknown: 658, unknown conditional: 0, unknown unconditional: 658] , Statistics on independence cache: Total cache size (in pairs): 658, Positive cache size: 637, Positive conditional cache size: 0, Positive unconditional cache size: 637, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Independence queries for same thread: 79 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4308.0ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 54.3ms, AutomataDifference: 1764.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 554.7ms, PartialOrderReductionTime: 526.9ms, HoareTripleCheckerStatistics: 834 SDtfs, 1168 SDslu, 2634 SDs, 0 SdLazy, 381 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 347.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1213.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 334.1ms AutomataMinimizationTime, 9 MinimizatonAttempts, 430 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.2ms SsaConstructionTime, 184.9ms SatisfiabilityAnalysisTime, 1173.8ms InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 489 ConstructedInterpolants, 0 QuantifiedInterpolants, 1485 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-21 17:09:28,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...