/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:56:35,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:56:35,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:56:35,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:56:35,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:56:35,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:56:35,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:56:35,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:56:35,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:56:35,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:56:35,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:56:35,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:56:35,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:56:35,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:56:35,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:56:35,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:56:35,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:56:35,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:56:35,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:56:35,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:56:35,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:56:35,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:56:35,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:56:35,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:56:35,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:56:35,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:56:35,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:56:35,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:56:35,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:56:36,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:56:36,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:56:36,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:56:36,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:56:36,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:56:36,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:56:36,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:56:36,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:56:36,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:56:36,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:56:36,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:56:36,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:56:36,009 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-VariableLbe.epf [2020-04-18 02:56:36,031 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:56:36,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:56:36,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:56:36,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:56:36,034 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:56:36,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:56:36,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:56:36,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:56:36,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:56:36,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:56:36,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:56:36,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:56:36,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:56:36,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:56:36,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:56:36,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:56:36,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:56:36,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:56:36,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:56:36,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:56:36,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:56:36,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:56:36,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:56:36,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:56:36,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:56:36,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:56:36,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:56:36,040 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:56:36,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:56:36,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:56:36,347 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:56:36,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:56:36,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:56:36,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:56:36,372 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:56:36,373 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-04-18 02:56:36,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e9e0803/5822c528a03a4cafab67cab6715c5c4f/FLAG93d95a434 [2020-04-18 02:56:37,008 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:56:37,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-04-18 02:56:37,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e9e0803/5822c528a03a4cafab67cab6715c5c4f/FLAG93d95a434 [2020-04-18 02:56:37,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e9e0803/5822c528a03a4cafab67cab6715c5c4f [2020-04-18 02:56:37,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:56:37,328 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:56:37,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:56:37,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:56:37,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:56:37,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:56:37" (1/1) ... [2020-04-18 02:56:37,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3abb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:37, skipping insertion in model container [2020-04-18 02:56:37,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:56:37" (1/1) ... [2020-04-18 02:56:37,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:56:37,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:56:37,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:56:37,891 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:56:37,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:56:38,031 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:56:38,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38 WrapperNode [2020-04-18 02:56:38,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:56:38,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:56:38,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:56:38,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:56:38,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38" (1/1) ... [2020-04-18 02:56:38,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38" (1/1) ... [2020-04-18 02:56:38,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:56:38,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:56:38,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:56:38,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:56:38,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38" (1/1) ... [2020-04-18 02:56:38,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38" (1/1) ... [2020-04-18 02:56:38,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38" (1/1) ... [2020-04-18 02:56:38,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38" (1/1) ... [2020-04-18 02:56:38,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38" (1/1) ... [2020-04-18 02:56:38,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38" (1/1) ... [2020-04-18 02:56:38,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38" (1/1) ... [2020-04-18 02:56:38,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:56:38,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:56:38,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:56:38,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:56:38,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:56:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:56:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:56:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:56:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:56:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:56:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:56:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:56:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:56:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:56:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:56:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 02:56:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 02:56:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:56:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:56:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:56:38,199 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:56:38,665 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:56:38,666 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:56:38,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:56:38 BoogieIcfgContainer [2020-04-18 02:56:38,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:56:38,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:56:38,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:56:38,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:56:38,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:56:37" (1/3) ... [2020-04-18 02:56:38,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a66b9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:56:38, skipping insertion in model container [2020-04-18 02:56:38,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:56:38" (2/3) ... [2020-04-18 02:56:38,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a66b9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:56:38, skipping insertion in model container [2020-04-18 02:56:38,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:56:38" (3/3) ... [2020-04-18 02:56:38,681 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.opt.i [2020-04-18 02:56:38,690 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:56:38,691 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:56:38,698 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:56:38,699 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:56:38,729 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,729 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,730 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,730 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,731 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,731 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,732 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,732 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,732 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,733 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,733 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,733 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,734 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,734 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,734 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,735 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,735 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,735 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,736 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,736 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,737 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,737 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,738 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,744 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,751 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,751 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,751 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,752 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,769 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,769 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,769 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,770 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,776 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,776 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,777 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,777 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,780 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,781 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,781 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,781 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:56:38,803 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 02:56:38,832 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:56:38,833 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:56:38,833 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:56:38,833 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:56:38,833 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:56:38,833 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:56:38,833 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:56:38,834 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:56:38,863 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-04-18 02:56:38,865 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 02:56:38,931 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 02:56:38,932 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:56:38,941 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 02:56:38,946 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-18 02:56:38,973 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-18 02:56:38,973 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:56:38,974 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-18 02:56:38,977 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-04-18 02:56:38,978 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:56:40,595 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-18 02:56:40,660 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-04-18 02:56:40,660 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-04-18 02:56:40,664 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-04-18 02:56:40,794 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-04-18 02:56:40,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-04-18 02:56:40,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:56:40,811 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:40,812 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:40,813 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:40,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:40,822 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-04-18 02:56:40,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:40,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092138467] [2020-04-18 02:56:40,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:41,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092138467] [2020-04-18 02:56:41,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:41,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:56:41,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136835729] [2020-04-18 02:56:41,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:56:41,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:41,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:56:41,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:56:41,063 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-04-18 02:56:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:41,119 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-04-18 02:56:41,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:56:41,120 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 02:56:41,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:41,157 INFO L225 Difference]: With dead ends: 1450 [2020-04-18 02:56:41,157 INFO L226 Difference]: Without dead ends: 1194 [2020-04-18 02:56:41,159 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:56:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-04-18 02:56:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-04-18 02:56:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-04-18 02:56:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-04-18 02:56:41,324 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-04-18 02:56:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:41,326 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-04-18 02:56:41,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:56:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-04-18 02:56:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:56:41,337 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:41,337 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:41,337 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:41,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:41,338 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-04-18 02:56:41,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:41,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602462817] [2020-04-18 02:56:41,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:41,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602462817] [2020-04-18 02:56:41,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:41,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:56:41,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655240948] [2020-04-18 02:56:41,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:56:41,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:41,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:56:41,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:56:41,585 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-04-18 02:56:41,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:41,631 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-04-18 02:56:41,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:56:41,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:56:41,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:41,641 INFO L225 Difference]: With dead ends: 1322 [2020-04-18 02:56:41,641 INFO L226 Difference]: Without dead ends: 1066 [2020-04-18 02:56:41,642 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:41,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-04-18 02:56:41,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-04-18 02:56:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-04-18 02:56:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-04-18 02:56:41,685 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-04-18 02:56:41,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:41,685 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-04-18 02:56:41,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:56:41,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-04-18 02:56:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:56:41,688 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:41,688 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:41,688 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:41,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:41,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1527944373, now seen corresponding path program 1 times [2020-04-18 02:56:41,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:41,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198713319] [2020-04-18 02:56:41,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:41,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198713319] [2020-04-18 02:56:41,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:41,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:56:41,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583287884] [2020-04-18 02:56:41,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:56:41,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:41,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:56:41,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:56:41,773 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-04-18 02:56:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:41,813 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-04-18 02:56:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:56:41,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 02:56:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:41,823 INFO L225 Difference]: With dead ends: 1162 [2020-04-18 02:56:41,823 INFO L226 Difference]: Without dead ends: 970 [2020-04-18 02:56:41,824 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:41,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-04-18 02:56:41,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-04-18 02:56:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-04-18 02:56:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-04-18 02:56:41,860 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-04-18 02:56:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:41,860 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-04-18 02:56:41,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:56:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-04-18 02:56:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:56:41,863 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:41,863 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:41,863 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash 847962781, now seen corresponding path program 1 times [2020-04-18 02:56:41,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:41,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57627502] [2020-04-18 02:56:41,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:41,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57627502] [2020-04-18 02:56:41,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:41,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:56:41,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619437793] [2020-04-18 02:56:41,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:56:41,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:41,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:56:41,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:56:41,925 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-04-18 02:56:41,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:41,960 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-04-18 02:56:41,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:56:41,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:56:41,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:41,968 INFO L225 Difference]: With dead ends: 1042 [2020-04-18 02:56:41,969 INFO L226 Difference]: Without dead ends: 898 [2020-04-18 02:56:41,969 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-04-18 02:56:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-04-18 02:56:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-04-18 02:56:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-04-18 02:56:42,004 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-04-18 02:56:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:42,004 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-04-18 02:56:42,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:56:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-04-18 02:56:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:56:42,007 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:42,007 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:42,007 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:42,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:42,008 INFO L82 PathProgramCache]: Analyzing trace with hash 517018401, now seen corresponding path program 1 times [2020-04-18 02:56:42,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:42,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373736552] [2020-04-18 02:56:42,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:42,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373736552] [2020-04-18 02:56:42,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:42,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:56:42,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478143078] [2020-04-18 02:56:42,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:56:42,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:42,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:56:42,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:42,064 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 5 states. [2020-04-18 02:56:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:42,164 INFO L93 Difference]: Finished difference Result 1090 states and 3695 transitions. [2020-04-18 02:56:42,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:56:42,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:56:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:42,169 INFO L225 Difference]: With dead ends: 1090 [2020-04-18 02:56:42,169 INFO L226 Difference]: Without dead ends: 472 [2020-04-18 02:56:42,170 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:56:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-04-18 02:56:42,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-04-18 02:56:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-04-18 02:56:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-04-18 02:56:42,187 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 14 [2020-04-18 02:56:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:42,188 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-04-18 02:56:42,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:56:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-04-18 02:56:42,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 02:56:42,189 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:42,190 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:42,190 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:42,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:42,190 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-04-18 02:56:42,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:42,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834835309] [2020-04-18 02:56:42,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:42,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834835309] [2020-04-18 02:56:42,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:42,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:56:42,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140526199] [2020-04-18 02:56:42,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:56:42,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:42,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:56:42,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:42,297 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-04-18 02:56:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:42,351 INFO L93 Difference]: Finished difference Result 586 states and 1831 transitions. [2020-04-18 02:56:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:56:42,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-18 02:56:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:42,354 INFO L225 Difference]: With dead ends: 586 [2020-04-18 02:56:42,354 INFO L226 Difference]: Without dead ends: 262 [2020-04-18 02:56:42,355 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:56:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-04-18 02:56:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-04-18 02:56:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-04-18 02:56:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 768 transitions. [2020-04-18 02:56:42,363 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 768 transitions. Word has length 16 [2020-04-18 02:56:42,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:42,363 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 768 transitions. [2020-04-18 02:56:42,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:56:42,364 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 768 transitions. [2020-04-18 02:56:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:56:42,365 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:42,365 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:42,365 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:42,366 INFO L82 PathProgramCache]: Analyzing trace with hash 704255862, now seen corresponding path program 1 times [2020-04-18 02:56:42,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:42,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740134463] [2020-04-18 02:56:42,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:42,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740134463] [2020-04-18 02:56:42,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:42,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:56:42,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35175396] [2020-04-18 02:56:42,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:56:42,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:42,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:56:42,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:42,456 INFO L87 Difference]: Start difference. First operand 262 states and 768 transitions. Second operand 5 states. [2020-04-18 02:56:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:42,508 INFO L93 Difference]: Finished difference Result 358 states and 1024 transitions. [2020-04-18 02:56:42,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:56:42,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-18 02:56:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:42,510 INFO L225 Difference]: With dead ends: 358 [2020-04-18 02:56:42,510 INFO L226 Difference]: Without dead ends: 154 [2020-04-18 02:56:42,511 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:56:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-04-18 02:56:42,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-04-18 02:56:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-18 02:56:42,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-04-18 02:56:42,517 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-04-18 02:56:42,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:42,517 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-04-18 02:56:42,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:56:42,518 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-04-18 02:56:42,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 02:56:42,518 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:56:42,518 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:56:42,519 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:56:42,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:56:42,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1157328918, now seen corresponding path program 1 times [2020-04-18 02:56:42,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:56:42,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363611334] [2020-04-18 02:56:42,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:56:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:56:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:56:42,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363611334] [2020-04-18 02:56:42,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:56:42,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:56:42,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948709786] [2020-04-18 02:56:42,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:56:42,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:56:42,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:56:42,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:56:42,605 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-04-18 02:56:42,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:56:42,643 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-04-18 02:56:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:56:42,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-18 02:56:42,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:56:42,644 INFO L225 Difference]: With dead ends: 130 [2020-04-18 02:56:42,644 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:56:42,645 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:56:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:56:42,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:56:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:56:42,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:56:42,646 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-18 02:56:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:56:42,646 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:56:42,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:56:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:56:42,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:56:42,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:56:42 BasicIcfg [2020-04-18 02:56:42,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:56:42,653 INFO L168 Benchmark]: Toolchain (without parser) took 5340.69 ms. Allocated memory was 148.9 MB in the beginning and 281.0 MB in the end (delta: 132.1 MB). Free memory was 105.4 MB in the beginning and 180.1 MB in the end (delta: -74.7 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,654 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 148.9 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.37 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 103.4 MB in the beginning and 161.8 MB in the end (delta: -58.4 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,655 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.11 ms. Allocated memory is still 205.5 MB. Free memory was 161.8 MB in the beginning and 159.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,656 INFO L168 Benchmark]: Boogie Preprocessor took 28.34 ms. Allocated memory is still 205.5 MB. Free memory was 159.2 MB in the beginning and 158.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,657 INFO L168 Benchmark]: RCFGBuilder took 548.82 ms. Allocated memory is still 205.5 MB. Free memory was 158.0 MB in the beginning and 133.1 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,658 INFO L168 Benchmark]: TraceAbstraction took 3978.18 ms. Allocated memory was 205.5 MB in the beginning and 281.0 MB in the end (delta: 75.5 MB). Free memory was 133.1 MB in the beginning and 180.1 MB in the end (delta: -47.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:56:42,662 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 148.9 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.37 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 103.4 MB in the beginning and 161.8 MB in the end (delta: -58.4 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.11 ms. Allocated memory is still 205.5 MB. Free memory was 161.8 MB in the beginning and 159.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.34 ms. Allocated memory is still 205.5 MB. Free memory was 159.2 MB in the beginning and 158.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 548.82 ms. Allocated memory is still 205.5 MB. Free memory was 158.0 MB in the beginning and 133.1 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3978.18 ms. Allocated memory was 205.5 MB in the beginning and 281.0 MB in the end (delta: 75.5 MB). Free memory was 133.1 MB in the beginning and 180.1 MB in the end (delta: -47.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1043 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 233 SDtfs, 258 SDslu, 315 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 4087 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...