/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:48:16,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:48:16,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:48:16,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:48:16,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:48:16,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:48:16,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:48:16,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:48:16,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:48:16,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:48:16,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:48:16,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:48:16,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:48:16,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:48:16,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:48:16,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:48:16,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:48:16,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:48:16,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:48:16,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:48:16,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:48:16,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:48:16,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:48:16,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:48:16,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 22:48:16,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:48:16,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:48:16,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:48:16,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:48:16,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:48:16,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:48:16,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:48:16,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:48:16,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:48:16,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:48:16,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:48:16,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 22:48:16,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:48:16,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:48:16,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:48:16,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:48:16,149 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:48:16,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:48:16,150 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:48:16,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:48:16,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:48:16,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:48:16,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:48:16,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:48:16,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:48:16,151 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:48:16,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:48:16,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:48:16,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:48:16,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:48:16,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:48:16,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:48:16,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:48:16,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:48:16,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:48:16,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:48:16,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:48:16,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:48:16,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:48:16,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:48:16,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:48:16,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:48:16,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:48:16,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:48:16,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:48:16,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:48:16,486 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:48:16,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-10-05 22:48:16,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767584611/6fca3301f2f540ebb327edf6294906d5/FLAG4cf8f6ffb [2020-10-05 22:48:17,095 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:48:17,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-10-05 22:48:17,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767584611/6fca3301f2f540ebb327edf6294906d5/FLAG4cf8f6ffb [2020-10-05 22:48:17,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767584611/6fca3301f2f540ebb327edf6294906d5 [2020-10-05 22:48:17,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:48:17,399 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:48:17,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:48:17,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:48:17,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:48:17,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:48:17" (1/1) ... [2020-10-05 22:48:17,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9bb26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:17, skipping insertion in model container [2020-10-05 22:48:17,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:48:17" (1/1) ... [2020-10-05 22:48:17,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:48:17,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:48:17,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:48:17,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:48:17,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:48:18,021 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:48:18,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18 WrapperNode [2020-10-05 22:48:18,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:48:18,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:48:18,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:48:18,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:48:18,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18" (1/1) ... [2020-10-05 22:48:18,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18" (1/1) ... [2020-10-05 22:48:18,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:48:18,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:48:18,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:48:18,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:48:18,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18" (1/1) ... [2020-10-05 22:48:18,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18" (1/1) ... [2020-10-05 22:48:18,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18" (1/1) ... [2020-10-05 22:48:18,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18" (1/1) ... [2020-10-05 22:48:18,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18" (1/1) ... [2020-10-05 22:48:18,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18" (1/1) ... [2020-10-05 22:48:18,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18" (1/1) ... [2020-10-05 22:48:18,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:48:18,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:48:18,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:48:18,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:48:18,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18" (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 [2020-10-05 22:48:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:48:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:48:18,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:48:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:48:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:48:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:48:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:48:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:48:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:48:18,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:48:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:48:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:48:18,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:48:18,174 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:48:18,573 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:48:18,573 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:48:18,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:48:18 BoogieIcfgContainer [2020-10-05 22:48:18,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:48:18,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:48:18,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:48:18,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:48:18,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:48:17" (1/3) ... [2020-10-05 22:48:18,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15869a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:48:18, skipping insertion in model container [2020-10-05 22:48:18,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:48:18" (2/3) ... [2020-10-05 22:48:18,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15869a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:48:18, skipping insertion in model container [2020-10-05 22:48:18,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:48:18" (3/3) ... [2020-10-05 22:48:18,585 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-10-05 22:48:18,597 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:48:18,597 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:48:18,606 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:48:18,607 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:48:18,636 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,636 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,637 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,637 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,639 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,640 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,641 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,641 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,652 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,653 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,653 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,655 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,656 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,656 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,656 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:48:18,672 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 22:48:18,695 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:48:18,695 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:48:18,695 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:48:18,695 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:48:18,695 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:48:18,696 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:48:18,696 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:48:18,696 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:48:18,713 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-05 22:48:18,715 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-05 22:48:18,775 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-05 22:48:18,775 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:48:18,781 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 22:48:18,788 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-05 22:48:18,814 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-05 22:48:18,815 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:48:18,816 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 22:48:18,818 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-05 22:48:18,820 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:48:20,446 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-10-05 22:48:20,446 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-10-05 22:48:20,450 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-05 22:48:20,476 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-05 22:48:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-05 22:48:20,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:48:20,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:20,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:20,489 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:20,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:20,495 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-10-05 22:48:20,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:20,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163967287] [2020-10-05 22:48:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:20,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163967287] [2020-10-05 22:48:20,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:20,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:48:20,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156739254] [2020-10-05 22:48:20,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:48:20,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:20,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:48:20,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:20,780 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-05 22:48:20,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:20,863 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-05 22:48:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:48:20,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-05 22:48:20,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:20,891 INFO L225 Difference]: With dead ends: 282 [2020-10-05 22:48:20,891 INFO L226 Difference]: Without dead ends: 218 [2020-10-05 22:48:20,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-05 22:48:20,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-05 22:48:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-05 22:48:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-05 22:48:20,965 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-05 22:48:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:20,966 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-05 22:48:20,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:48:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-05 22:48:20,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:48:20,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:20,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:20,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:48:20,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:20,969 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-10-05 22:48:20,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:20,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125987387] [2020-10-05 22:48:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:21,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125987387] [2020-10-05 22:48:21,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:21,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:48:21,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519097387] [2020-10-05 22:48:21,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:21,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:21,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:21,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:21,066 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-05 22:48:21,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:21,098 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-10-05 22:48:21,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:48:21,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-05 22:48:21,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:21,101 INFO L225 Difference]: With dead ends: 296 [2020-10-05 22:48:21,102 INFO L226 Difference]: Without dead ends: 200 [2020-10-05 22:48:21,103 INFO L675 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 [2020-10-05 22:48:21,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-05 22:48:21,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-05 22:48:21,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-05 22:48:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-10-05 22:48:21,122 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-10-05 22:48:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:21,123 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-10-05 22:48:21,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:21,123 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-10-05 22:48:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:48:21,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:21,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:21,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:48:21,125 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:21,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:21,125 INFO L82 PathProgramCache]: Analyzing trace with hash -222134721, now seen corresponding path program 1 times [2020-10-05 22:48:21,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:21,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382406984] [2020-10-05 22:48:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:21,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382406984] [2020-10-05 22:48:21,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:21,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:48:21,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520283188] [2020-10-05 22:48:21,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:21,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:21,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:21,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:21,182 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand 4 states. [2020-10-05 22:48:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:21,216 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-10-05 22:48:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:48:21,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-05 22:48:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:21,218 INFO L225 Difference]: With dead ends: 314 [2020-10-05 22:48:21,219 INFO L226 Difference]: Without dead ends: 182 [2020-10-05 22:48:21,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:48:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-05 22:48:21,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-10-05 22:48:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-05 22:48:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-10-05 22:48:21,231 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-10-05 22:48:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:21,231 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-10-05 22:48:21,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-10-05 22:48:21,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:48:21,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:21,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:21,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:48:21,234 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:21,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:21,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-10-05 22:48:21,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:21,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828037780] [2020-10-05 22:48:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:21,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828037780] [2020-10-05 22:48:21,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:21,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:48:21,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948506640] [2020-10-05 22:48:21,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:48:21,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:21,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:48:21,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:21,292 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand 3 states. [2020-10-05 22:48:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:21,297 INFO L93 Difference]: Finished difference Result 138 states and 328 transitions. [2020-10-05 22:48:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:48:21,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-05 22:48:21,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:21,299 INFO L225 Difference]: With dead ends: 138 [2020-10-05 22:48:21,300 INFO L226 Difference]: Without dead ends: 138 [2020-10-05 22:48:21,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-05 22:48:21,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-05 22:48:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-05 22:48:21,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 328 transitions. [2020-10-05 22:48:21,308 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 328 transitions. Word has length 11 [2020-10-05 22:48:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:21,308 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 328 transitions. [2020-10-05 22:48:21,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:48:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 328 transitions. [2020-10-05 22:48:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:48:21,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:21,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:21,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:48:21,311 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:21,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-10-05 22:48:21,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:21,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940724375] [2020-10-05 22:48:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:21,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940724375] [2020-10-05 22:48:21,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:21,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:48:21,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763666005] [2020-10-05 22:48:21,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:48:21,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:21,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:48:21,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:21,347 INFO L87 Difference]: Start difference. First operand 138 states and 328 transitions. Second operand 3 states. [2020-10-05 22:48:21,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:21,364 INFO L93 Difference]: Finished difference Result 170 states and 400 transitions. [2020-10-05 22:48:21,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:48:21,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-05 22:48:21,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:21,366 INFO L225 Difference]: With dead ends: 170 [2020-10-05 22:48:21,366 INFO L226 Difference]: Without dead ends: 80 [2020-10-05 22:48:21,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:21,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-05 22:48:21,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-05 22:48:21,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-05 22:48:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-10-05 22:48:21,371 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-10-05 22:48:21,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:21,371 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-10-05 22:48:21,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:48:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-10-05 22:48:21,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:48:21,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:21,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:21,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:48:21,373 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:21,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:21,373 INFO L82 PathProgramCache]: Analyzing trace with hash 413447767, now seen corresponding path program 1 times [2020-10-05 22:48:21,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:21,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196114736] [2020-10-05 22:48:21,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:21,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196114736] [2020-10-05 22:48:21,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:21,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:48:21,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642294964] [2020-10-05 22:48:21,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:21,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:21,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:21,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:21,438 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand 4 states. [2020-10-05 22:48:21,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:21,457 INFO L93 Difference]: Finished difference Result 104 states and 232 transitions. [2020-10-05 22:48:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:48:21,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 22:48:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:21,459 INFO L225 Difference]: With dead ends: 104 [2020-10-05 22:48:21,459 INFO L226 Difference]: Without dead ends: 68 [2020-10-05 22:48:21,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:48:21,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-05 22:48:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-05 22:48:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-05 22:48:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-05 22:48:21,463 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-10-05 22:48:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:21,464 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-05 22:48:21,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-05 22:48:21,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:48:21,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:21,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:21,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:48:21,465 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:21,466 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-10-05 22:48:21,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:21,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643407622] [2020-10-05 22:48:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:21,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643407622] [2020-10-05 22:48:21,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:21,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:48:21,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899705059] [2020-10-05 22:48:21,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:48:21,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:21,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:48:21,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:48:21,540 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-05 22:48:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:21,575 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-05 22:48:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:48:21,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 22:48:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:21,577 INFO L225 Difference]: With dead ends: 81 [2020-10-05 22:48:21,577 INFO L226 Difference]: Without dead ends: 59 [2020-10-05 22:48:21,577 INFO L675 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 [2020-10-05 22:48:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-05 22:48:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-05 22:48:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-05 22:48:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-05 22:48:21,581 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-05 22:48:21,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:21,581 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-05 22:48:21,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:48:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-05 22:48:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:48:21,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:21,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:21,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:48:21,583 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:21,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:21,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-10-05 22:48:21,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:21,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349616734] [2020-10-05 22:48:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:21,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349616734] [2020-10-05 22:48:21,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:21,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:48:21,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603595706] [2020-10-05 22:48:21,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:48:21,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:21,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:48:21,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:48:21,639 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-05 22:48:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:21,678 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-05 22:48:21,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:48:21,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-05 22:48:21,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:21,679 INFO L225 Difference]: With dead ends: 60 [2020-10-05 22:48:21,679 INFO L226 Difference]: Without dead ends: 45 [2020-10-05 22:48:21,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:48:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-05 22:48:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-05 22:48:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-05 22:48:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-05 22:48:21,682 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-05 22:48:21,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:21,683 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-05 22:48:21,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:48:21,683 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-05 22:48:21,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:48:21,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:21,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:21,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:48:21,684 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:21,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:21,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-10-05 22:48:21,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:21,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745073290] [2020-10-05 22:48:21,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:21,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745073290] [2020-10-05 22:48:21,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:21,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:48:21,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422530679] [2020-10-05 22:48:21,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:48:21,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:21,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:48:21,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:48:21,741 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-05 22:48:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:21,785 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-05 22:48:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:48:21,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-05 22:48:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:21,786 INFO L225 Difference]: With dead ends: 42 [2020-10-05 22:48:21,786 INFO L226 Difference]: Without dead ends: 36 [2020-10-05 22:48:21,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-05 22:48:21,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-05 22:48:21,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-05 22:48:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-05 22:48:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-05 22:48:21,789 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-05 22:48:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:21,789 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-05 22:48:21,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:48:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-05 22:48:21,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:48:21,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:48:21,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:48:21,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:48:21,791 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:48:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:48:21,791 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-10-05 22:48:21,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:48:21,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624445514] [2020-10-05 22:48:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:48:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:48:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:48:21,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624445514] [2020-10-05 22:48:21,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:48:21,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:48:21,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064518915] [2020-10-05 22:48:21,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:48:21,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:48:21,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:48:21,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:21,819 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-05 22:48:21,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:48:21,823 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-05 22:48:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:48:21,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-05 22:48:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:48:21,824 INFO L225 Difference]: With dead ends: 35 [2020-10-05 22:48:21,824 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:48:21,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:48:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:48:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:48:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:48:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:48:21,825 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-05 22:48:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:48:21,826 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:48:21,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:48:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:48:21,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:48:21,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 22:48:21,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:48:21 BasicIcfg [2020-10-05 22:48:21,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:48:21,836 INFO L168 Benchmark]: Toolchain (without parser) took 4436.41 ms. Allocated memory was 140.0 MB in the beginning and 248.5 MB in the end (delta: 108.5 MB). Free memory was 101.6 MB in the beginning and 154.1 MB in the end (delta: -52.6 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:21,837 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 22:48:21,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.64 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 160.7 MB in the end (delta: -59.4 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:21,839 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.10 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:21,840 INFO L168 Benchmark]: Boogie Preprocessor took 27.87 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 157.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:21,840 INFO L168 Benchmark]: RCFGBuilder took 476.03 ms. Allocated memory is still 203.9 MB. Free memory was 156.7 MB in the beginning and 135.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:21,841 INFO L168 Benchmark]: TraceAbstraction took 3255.79 ms. Allocated memory was 203.9 MB in the beginning and 248.5 MB in the end (delta: 44.6 MB). Free memory was 134.6 MB in the beginning and 154.1 MB in the end (delta: -19.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:48:21,846 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 621.64 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 160.7 MB in the end (delta: -59.4 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.10 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.87 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 157.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.03 ms. Allocated memory is still 203.9 MB. Free memory was 156.7 MB in the beginning and 135.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3255.79 ms. Allocated memory was 203.9 MB in the beginning and 248.5 MB in the end (delta: 44.6 MB). Free memory was 134.6 MB in the beginning and 154.1 MB in the end (delta: -19.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 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 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 193 SDtfs, 133 SDslu, 201 SDs, 0 SdLazy, 127 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3658 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...