/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 13:58:08,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 13:58:08,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 13:58:08,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 13:58:08,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 13:58:08,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 13:58:08,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 13:58:08,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 13:58:08,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 13:58:08,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 13:58:08,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 13:58:08,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 13:58:08,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 13:58:08,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 13:58:08,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 13:58:08,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 13:58:08,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 13:58:08,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 13:58:08,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 13:58:08,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 13:58:08,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 13:58:08,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 13:58:08,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 13:58:08,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 13:58:08,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 13:58:08,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 13:58:08,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 13:58:08,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 13:58:08,356 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-Separate.epf [2022-01-18 13:58:08,372 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 13:58:08,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 13:58:08,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 13:58:08,373 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 13:58:08,373 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 13:58:08,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 13:58:08,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 13:58:08,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 13:58:08,374 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 13:58:08,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 13:58:08,375 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 13:58:08,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 13:58:08,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 13:58:08,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 13:58:08,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 13:58:08,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 13:58:08,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 13:58:08,376 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 13:58:08,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 13:58:08,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 13:58:08,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 13:58:08,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 13:58:08,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 13:58:08,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 13:58:08,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 13:58:08,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:58:08,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 13:58:08,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 13:58:08,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 13:58:08,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 13:58:08,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 13:58:08,378 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 13:58:08,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 13:58:08,378 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 13:58:08,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 13:58:08,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 13:58:08,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 13:58:08,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 13:58:08,610 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 13:58:08,611 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 13:58:08,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2022-01-18 13:58:08,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42be5f021/ce28b4fcc7e7461ca73a04c3afd5356b/FLAGd1b4beec6 [2022-01-18 13:58:09,033 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 13:58:09,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2022-01-18 13:58:09,034 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-01-18 13:58:09,034 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2022-01-18 13:58:09,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42be5f021/ce28b4fcc7e7461ca73a04c3afd5356b/FLAGd1b4beec6 [2022-01-18 13:58:09,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42be5f021/ce28b4fcc7e7461ca73a04c3afd5356b [2022-01-18 13:58:09,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 13:58:09,461 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 13:58:09,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 13:58:09,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 13:58:09,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 13:58:09,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52348bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09, skipping insertion in model container [2022-01-18 13:58:09,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 13:58:09,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 13:58:09,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:58:09,657 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 13:58:09,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:58:09,674 INFO L208 MainTranslator]: Completed translation [2022-01-18 13:58:09,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09 WrapperNode [2022-01-18 13:58:09,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 13:58:09,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 13:58:09,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 13:58:09,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 13:58:09,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,703 INFO L137 Inliner]: procedures = 11, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-01-18 13:58:09,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 13:58:09,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 13:58:09,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 13:58:09,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 13:58:09,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 13:58:09,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 13:58:09,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 13:58:09,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 13:58:09,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09" (1/1) ... [2022-01-18 13:58:09,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:58:09,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:58:09,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 13:58:09,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 13:58:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-18 13:58:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 13:58:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2022-01-18 13:58:09,781 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2022-01-18 13:58:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 13:58:09,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 13:58:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 13:58:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 13:58:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-18 13:58:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 13:58:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 13:58:09,783 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 13:58:09,850 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 13:58:09,851 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 13:58:09,953 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 13:58:09,959 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 13:58:09,959 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 13:58:09,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:58:09 BoogieIcfgContainer [2022-01-18 13:58:09,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 13:58:09,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 13:58:09,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 13:58:09,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 13:58:09,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:58:09" (1/3) ... [2022-01-18 13:58:09,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270ccc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:58:09, skipping insertion in model container [2022-01-18 13:58:09,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:09" (2/3) ... [2022-01-18 13:58:09,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270ccc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:58:09, skipping insertion in model container [2022-01-18 13:58:09,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:58:09" (3/3) ... [2022-01-18 13:58:09,968 INFO L111 eAbstractionObserver]: Analyzing ICFG simpleReturn.c [2022-01-18 13:58:09,972 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 13:58:09,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 13:58:09,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 13:58:09,972 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 13:58:09,995 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,996 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,996 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,996 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,996 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,996 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,997 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,997 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,997 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,997 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,997 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,997 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,998 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,998 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,998 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,998 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,998 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,998 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,999 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,999 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,999 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,999 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:09,999 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,000 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,000 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,001 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,001 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,001 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,001 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,002 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,002 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,002 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,002 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,002 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,002 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,003 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,003 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,003 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,006 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,006 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,006 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,007 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,007 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,007 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,007 WARN L322 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:10,011 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-01-18 13:58:10,046 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:58:10,052 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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 [2022-01-18 13:58:10,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 13:58:10,060 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 49 transitions, 106 flow [2022-01-18 13:58:10,079 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 66 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 65 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:10,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 65 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-18 13:58:10,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:58:10,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:58:10,088 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:58:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:58:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash -166796877, now seen corresponding path program 1 times [2022-01-18 13:58:10,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:58:10,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235338931] [2022-01-18 13:58:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:58:10,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:58:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:58:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:58:10,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:58:10,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235338931] [2022-01-18 13:58:10,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235338931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:58:10,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:58:10,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:58:10,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973464745] [2022-01-18 13:58:10,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:58:10,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 13:58:10,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:58:10,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 13:58:10,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-01-18 13:58:10,861 INFO L87 Difference]: Start difference. First operand has 66 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 65 states have internal predecessors, (93), 0 states have call successors, (0), 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 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:11,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:58:11,610 INFO L93 Difference]: Finished difference Result 80 states and 107 transitions. [2022-01-18 13:58:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 13:58:11,613 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-18 13:58:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:58:11,619 INFO L225 Difference]: With dead ends: 80 [2022-01-18 13:58:11,619 INFO L226 Difference]: Without dead ends: 60 [2022-01-18 13:58:11,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=1110, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:58:11,625 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 141 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:58:11,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 416 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:58:11,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-18 13:58:11,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-01-18 13:58:11,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 59 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2022-01-18 13:58:11,655 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 37 [2022-01-18 13:58:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:58:11,656 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2022-01-18 13:58:11,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:11,656 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2022-01-18 13:58:11,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-18 13:58:11,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:58:11,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:58:11,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 13:58:11,658 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:58:11,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:58:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash -635222733, now seen corresponding path program 2 times [2022-01-18 13:58:11,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:58:11,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117025144] [2022-01-18 13:58:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:58:11,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:58:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:58:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:58:11,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:58:11,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117025144] [2022-01-18 13:58:11,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117025144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:58:11,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:58:11,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:58:11,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128544881] [2022-01-18 13:58:11,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:58:11,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 13:58:11,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:58:11,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 13:58:11,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-01-18 13:58:11,968 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:58:12,613 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2022-01-18 13:58:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 13:58:12,615 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-18 13:58:12,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:58:12,616 INFO L225 Difference]: With dead ends: 78 [2022-01-18 13:58:12,616 INFO L226 Difference]: Without dead ends: 54 [2022-01-18 13:58:12,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=266, Invalid=1140, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 13:58:12,618 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 165 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:58:12,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 388 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:58:12,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-18 13:58:12,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-01-18 13:58:12,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 53 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2022-01-18 13:58:12,632 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 37 [2022-01-18 13:58:12,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:58:12,632 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2022-01-18 13:58:12,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2022-01-18 13:58:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-18 13:58:12,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:58:12,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:58:12,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 13:58:12,634 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:58:12,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:58:12,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1213011789, now seen corresponding path program 3 times [2022-01-18 13:58:12,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:58:12,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189475939] [2022-01-18 13:58:12,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:58:12,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:58:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:58:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:58:12,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:58:12,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189475939] [2022-01-18 13:58:12,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189475939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:58:12,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:58:12,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:58:12,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741694824] [2022-01-18 13:58:12,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:58:12,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 13:58:12,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:58:12,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 13:58:12,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-01-18 13:58:12,967 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:13,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:58:13,532 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2022-01-18 13:58:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 13:58:13,533 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-18 13:58:13,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:58:13,533 INFO L225 Difference]: With dead ends: 74 [2022-01-18 13:58:13,534 INFO L226 Difference]: Without dead ends: 51 [2022-01-18 13:58:13,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=1153, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 13:58:13,536 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 141 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:58:13,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 347 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:58:13,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-18 13:58:13,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-01-18 13:58:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2022-01-18 13:58:13,542 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 37 [2022-01-18 13:58:13,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:58:13,542 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2022-01-18 13:58:13,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2022-01-18 13:58:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-18 13:58:13,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:58:13,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:58:13,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 13:58:13,544 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:58:13,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:58:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1414199533, now seen corresponding path program 4 times [2022-01-18 13:58:13,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:58:13,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431267611] [2022-01-18 13:58:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:58:13,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:58:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:58:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:58:13,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:58:13,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431267611] [2022-01-18 13:58:13,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431267611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:58:13,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:58:13,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:58:13,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568125986] [2022-01-18 13:58:13,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:58:13,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 13:58:13,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:58:13,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 13:58:13,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-01-18 13:58:13,822 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:58:14,353 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2022-01-18 13:58:14,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 13:58:14,354 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-18 13:58:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:58:14,354 INFO L225 Difference]: With dead ends: 73 [2022-01-18 13:58:14,354 INFO L226 Difference]: Without dead ends: 48 [2022-01-18 13:58:14,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:58:14,356 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 133 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:58:14,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 335 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:58:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-18 13:58:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-01-18 13:58:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 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) [2022-01-18 13:58:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2022-01-18 13:58:14,366 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 37 [2022-01-18 13:58:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:58:14,367 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2022-01-18 13:58:14,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2022-01-18 13:58:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-18 13:58:14,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:58:14,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:58:14,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 13:58:14,368 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:58:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:58:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash -203043789, now seen corresponding path program 5 times [2022-01-18 13:58:14,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:58:14,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180522534] [2022-01-18 13:58:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:58:14,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:58:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:58:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:58:14,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:58:14,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180522534] [2022-01-18 13:58:14,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180522534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:58:14,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:58:14,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:58:14,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788912800] [2022-01-18 13:58:14,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:58:14,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 13:58:14,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:58:14,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 13:58:14,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-01-18 13:58:14,624 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:15,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:58:15,137 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2022-01-18 13:58:15,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 13:58:15,138 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-18 13:58:15,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:58:15,139 INFO L225 Difference]: With dead ends: 72 [2022-01-18 13:58:15,139 INFO L226 Difference]: Without dead ends: 45 [2022-01-18 13:58:15,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:58:15,140 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 135 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 13:58:15,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 314 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 13:58:15,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-18 13:58:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-01-18 13:58:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 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) [2022-01-18 13:58:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-01-18 13:58:15,144 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 37 [2022-01-18 13:58:15,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:58:15,145 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-01-18 13:58:15,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-01-18 13:58:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-18 13:58:15,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:58:15,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:58:15,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 13:58:15,146 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:58:15,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:58:15,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1764657197, now seen corresponding path program 6 times [2022-01-18 13:58:15,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:58:15,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129867419] [2022-01-18 13:58:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:58:15,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:58:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:58:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:58:15,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:58:15,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129867419] [2022-01-18 13:58:15,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129867419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:58:15,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:58:15,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-18 13:58:15,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125360118] [2022-01-18 13:58:15,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:58:15,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 13:58:15,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:58:15,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 13:58:15,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-01-18 13:58:15,371 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:15,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:58:15,859 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-01-18 13:58:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 13:58:15,859 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-18 13:58:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:58:15,859 INFO L225 Difference]: With dead ends: 44 [2022-01-18 13:58:15,859 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 13:58:15,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 13:58:15,862 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 104 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 13:58:15,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 245 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 13:58:15,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 13:58:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 13:58:15,863 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) [2022-01-18 13:58:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 13:58:15,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2022-01-18 13:58:15,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:58:15,863 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 13:58:15,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 13:58:15,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 13:58:15,866 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-01-18 13:58:15,866 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-01-18 13:58:15,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 13:58:15,869 INFO L732 BasicCegarLoop]: Path program histogram: [6] [2022-01-18 13:58:15,870 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 13:58:15,870 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 13:58:15,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:58:15 BasicIcfg [2022-01-18 13:58:15,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 13:58:15,873 INFO L158 Benchmark]: Toolchain (without parser) took 6411.26ms. Allocated memory was 346.0MB in the beginning and 484.4MB in the end (delta: 138.4MB). Free memory was 289.1MB in the beginning and 261.6MB in the end (delta: 27.5MB). Peak memory consumption was 165.2MB. Max. memory is 16.0GB. [2022-01-18 13:58:15,873 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 346.0MB. Free memory is still 307.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:58:15,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.31ms. Allocated memory was 346.0MB in the beginning and 484.4MB in the end (delta: 138.4MB). Free memory was 288.9MB in the beginning and 457.7MB in the end (delta: -168.8MB). Peak memory consumption was 9.1MB. Max. memory is 16.0GB. [2022-01-18 13:58:15,874 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.82ms. Allocated memory is still 484.4MB. Free memory was 457.7MB in the beginning and 455.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:58:15,874 INFO L158 Benchmark]: Boogie Preprocessor took 15.23ms. Allocated memory is still 484.4MB. Free memory was 455.6MB in the beginning and 454.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:58:15,874 INFO L158 Benchmark]: RCFGBuilder took 241.09ms. Allocated memory is still 484.4MB. Free memory was 454.6MB in the beginning and 440.7MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 13:58:15,875 INFO L158 Benchmark]: TraceAbstraction took 5910.09ms. Allocated memory is still 484.4MB. Free memory was 440.7MB in the beginning and 261.6MB in the end (delta: 179.1MB). Peak memory consumption was 180.4MB. Max. memory is 16.0GB. [2022-01-18 13:58:15,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 346.0MB. Free memory is still 307.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 212.31ms. Allocated memory was 346.0MB in the beginning and 484.4MB in the end (delta: 138.4MB). Free memory was 288.9MB in the beginning and 457.7MB in the end (delta: -168.8MB). Peak memory consumption was 9.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.82ms. Allocated memory is still 484.4MB. Free memory was 457.7MB in the beginning and 455.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 15.23ms. Allocated memory is still 484.4MB. Free memory was 455.6MB in the beginning and 454.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 241.09ms. Allocated memory is still 484.4MB. Free memory was 454.6MB in the beginning and 440.7MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 5910.09ms. Allocated memory is still 484.4MB. Free memory was 440.7MB in the beginning and 261.6MB in the end (delta: 179.1MB). Peak memory consumption was 180.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 59 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 819 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 819 mSDsluCounter, 2045 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1898 mSDsCounter, 127 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2020 IncrementalHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 127 mSolverCounterUnsat, 151 mSDtfsCounter, 2020 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, InterpolantAutomatonStates: 134, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 1942 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2022-01-18 13:58:15,910 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...