/usr/bin/java -Xmx16000000000 -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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:48:16,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:48:16,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:48:16,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:48:16,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:48:16,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:48:16,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:48:16,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:48:16,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:48:16,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:48:16,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:48:16,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:48:16,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:48:16,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:48:16,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:48:16,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:48:16,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:48:16,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:48:16,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:48:16,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:48:16,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:48:16,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:48:16,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:48:16,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:48:16,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 18:48:16,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:48:16,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:48:16,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:48:16,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:48:16,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:48:16,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:48:16,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:48:16,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:48:16,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:48:16,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:48:16,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:48:16,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:48:16,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:48:16,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:48:16,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:48:16,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:48:16,804 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:48:16,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:48:16,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:48:16,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:48:16,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:48:16,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:48:16,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:48:16,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:48:16,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:48:16,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:48:16,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:48:16,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:48:16,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:48:16,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:48:16,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:48:16,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:48:16,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:48:16,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:48:16,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:48:16,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:48:16,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:48:16,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:48:16,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:48:16,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:48:16,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:48:16,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:48:17,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:48:17,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:48:17,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:48:17,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:48:17,095 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:48:17,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin000_tso.opt.i [2020-10-11 18:48:17,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de79c7c52/b13d7466cc18465284b011fcd0535648/FLAGbf68df623 [2020-10-11 18:48:17,609 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:48:17,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_tso.opt.i [2020-10-11 18:48:17,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de79c7c52/b13d7466cc18465284b011fcd0535648/FLAGbf68df623 [2020-10-11 18:48:17,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de79c7c52/b13d7466cc18465284b011fcd0535648 [2020-10-11 18:48:18,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:48:18,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:48:18,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:48:18,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:48:18,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:48:18,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:48:17" (1/1) ... [2020-10-11 18:48:18,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fc379b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18, skipping insertion in model container [2020-10-11 18:48:18,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:48:17" (1/1) ... [2020-10-11 18:48:18,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:48:18,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:48:18,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:48:18,585 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:48:18,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:48:18,737 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:48:18,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18 WrapperNode [2020-10-11 18:48:18,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:48:18,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:48:18,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:48:18,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:48:18,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18" (1/1) ... [2020-10-11 18:48:18,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18" (1/1) ... [2020-10-11 18:48:18,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:48:18,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:48:18,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:48:18,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:48:18,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18" (1/1) ... [2020-10-11 18:48:18,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18" (1/1) ... [2020-10-11 18:48:18,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18" (1/1) ... [2020-10-11 18:48:18,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18" (1/1) ... [2020-10-11 18:48:18,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18" (1/1) ... [2020-10-11 18:48:18,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18" (1/1) ... [2020-10-11 18:48:18,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18" (1/1) ... [2020-10-11 18:48:18,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:48:18,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:48:18,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:48:18,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:48:18,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18" (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 [2020-10-11 18:48:18,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:48:18,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:48:18,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:48:18,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:48:18,911 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:48:18,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:48:18,913 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:48:18,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:48:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:48:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:48:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:48:18,917 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:48:19,314 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:48:19,314 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:48:19,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:48:19 BoogieIcfgContainer [2020-10-11 18:48:19,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:48:19,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:48:19,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:48:19,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:48:19,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:48:17" (1/3) ... [2020-10-11 18:48:19,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47653924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:48:19, skipping insertion in model container [2020-10-11 18:48:19,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:48:18" (2/3) ... [2020-10-11 18:48:19,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47653924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:48:19, skipping insertion in model container [2020-10-11 18:48:19,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:48:19" (3/3) ... [2020-10-11 18:48:19,327 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_tso.opt.i [2020-10-11 18:48:19,340 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:48:19,349 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:48:19,350 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:48:19,375 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,375 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,376 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,376 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,377 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,377 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,377 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,378 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,378 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,378 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,378 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,382 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,382 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,383 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,392 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,392 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:48:19,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-11 18:48:19,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:48:19,437 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:48:19,437 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:48:19,437 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:48:19,437 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:48:19,438 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:48:19,438 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:48:19,438 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:48:19,452 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-11 18:48:19,489 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-11 18:48:19,490 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:48:19,494 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-11 18:48:19,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 56 transitions, 122 flow [2020-10-11 18:48:19,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 96 flow [2020-10-11 18:48:19,516 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2020-10-11 18:48:19,516 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:48:19,517 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:48:19,518 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:48:19,518 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:48:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:48:19,525 INFO L82 PathProgramCache]: Analyzing trace with hash 441942769, now seen corresponding path program 1 times [2020-10-11 18:48:19,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:48:19,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528575829] [2020-10-11 18:48:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:48:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:48:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:48:19,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528575829] [2020-10-11 18:48:19,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:48:19,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:48:19,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057150539] [2020-10-11 18:48:19,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:48:19,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:48:19,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:48:19,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:48:20,230 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 56 [2020-10-11 18:48:20,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 96 flow. Second operand 6 states. [2020-10-11 18:48:20,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:48:20,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 56 [2020-10-11 18:48:20,234 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:48:20,392 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2020-10-11 18:48:20,393 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:48:20,393 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 59 events. 3/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 4/62 useless extension candidates. Maximal degree in co-relation 63. Up to 7 conditions per place. [2020-10-11 18:48:20,395 INFO L132 encePairwiseOnDemand]: 49/56 looper letters, 6 selfloop transitions, 2 changer transitions 11/54 dead transitions. [2020-10-11 18:48:20,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 150 flow [2020-10-11 18:48:20,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:48:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:48:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 436 transitions. [2020-10-11 18:48:20,418 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8650793650793651 [2020-10-11 18:48:20,419 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 436 transitions. [2020-10-11 18:48:20,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 436 transitions. [2020-10-11 18:48:20,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:48:20,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 436 transitions. [2020-10-11 18:48:20,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:48:20,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:48:20,439 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:48:20,441 INFO L185 Difference]: Start difference. First operand has 51 places, 45 transitions, 96 flow. Second operand 9 states and 436 transitions. [2020-10-11 18:48:20,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 150 flow [2020-10-11 18:48:20,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 18:48:20,450 INFO L241 Difference]: Finished difference. Result has 64 places, 43 transitions, 110 flow [2020-10-11 18:48:20,452 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=110, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2020-10-11 18:48:20,453 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2020-10-11 18:48:20,453 INFO L481 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 110 flow [2020-10-11 18:48:20,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:48:20,454 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:48:20,454 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:48:20,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:48:20,455 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:48:20,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:48:20,455 INFO L82 PathProgramCache]: Analyzing trace with hash -954630478, now seen corresponding path program 1 times [2020-10-11 18:48:20,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:48:20,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240308253] [2020-10-11 18:48:20,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:48:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:48:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:48:20,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240308253] [2020-10-11 18:48:20,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:48:20,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:48:20,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245912763] [2020-10-11 18:48:20,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:48:20,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:48:20,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:48:20,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:48:20,859 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 56 [2020-10-11 18:48:20,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 110 flow. Second operand 6 states. [2020-10-11 18:48:20,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:48:20,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 56 [2020-10-11 18:48:20,860 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:48:20,992 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2020-10-11 18:48:20,992 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2020-10-11 18:48:20,992 INFO L80 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 58 events. 3/58 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 2/60 useless extension candidates. Maximal degree in co-relation 95. Up to 7 conditions per place. [2020-10-11 18:48:20,993 INFO L132 encePairwiseOnDemand]: 50/56 looper letters, 6 selfloop transitions, 2 changer transitions 10/53 dead transitions. [2020-10-11 18:48:20,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 184 flow [2020-10-11 18:48:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:48:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:48:20,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 434 transitions. [2020-10-11 18:48:20,996 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2020-10-11 18:48:20,997 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 434 transitions. [2020-10-11 18:48:20,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 434 transitions. [2020-10-11 18:48:20,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:48:20,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 434 transitions. [2020-10-11 18:48:20,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:48:21,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:48:21,001 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:48:21,001 INFO L185 Difference]: Start difference. First operand has 64 places, 43 transitions, 110 flow. Second operand 9 states and 434 transitions. [2020-10-11 18:48:21,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 184 flow [2020-10-11 18:48:21,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 152 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:48:21,006 INFO L241 Difference]: Finished difference. Result has 64 places, 43 transitions, 114 flow [2020-10-11 18:48:21,006 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=114, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2020-10-11 18:48:21,007 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2020-10-11 18:48:21,007 INFO L481 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 114 flow [2020-10-11 18:48:21,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:48:21,007 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:48:21,007 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:48:21,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:48:21,008 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:48:21,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:48:21,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1419898419, now seen corresponding path program 1 times [2020-10-11 18:48:21,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:48:21,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138155219] [2020-10-11 18:48:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:48:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:48:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:48:21,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138155219] [2020-10-11 18:48:21,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:48:21,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:48:21,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859734299] [2020-10-11 18:48:21,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:48:21,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:48:21,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:48:21,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:48:21,391 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 56 [2020-10-11 18:48:21,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 114 flow. Second operand 7 states. [2020-10-11 18:48:21,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:48:21,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 56 [2020-10-11 18:48:21,392 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:48:21,549 INFO L129 PetriNetUnfolder]: 4/64 cut-off events. [2020-10-11 18:48:21,549 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2020-10-11 18:48:21,550 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 64 events. 4/64 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 2/65 useless extension candidates. Maximal degree in co-relation 113. Up to 7 conditions per place. [2020-10-11 18:48:21,550 INFO L132 encePairwiseOnDemand]: 48/56 looper letters, 6 selfloop transitions, 4 changer transitions 12/55 dead transitions. [2020-10-11 18:48:21,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 209 flow [2020-10-11 18:48:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:48:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:48:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 464 transitions. [2020-10-11 18:48:21,553 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2020-10-11 18:48:21,553 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 464 transitions. [2020-10-11 18:48:21,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 464 transitions. [2020-10-11 18:48:21,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:48:21,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 464 transitions. [2020-10-11 18:48:21,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:48:21,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:48:21,557 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:48:21,557 INFO L185 Difference]: Start difference. First operand has 64 places, 43 transitions, 114 flow. Second operand 10 states and 464 transitions. [2020-10-11 18:48:21,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 209 flow [2020-10-11 18:48:21,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 175 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:48:21,561 INFO L241 Difference]: Finished difference. Result has 67 places, 43 transitions, 128 flow [2020-10-11 18:48:21,561 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=128, PETRI_PLACES=67, PETRI_TRANSITIONS=43} [2020-10-11 18:48:21,561 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2020-10-11 18:48:21,561 INFO L481 AbstractCegarLoop]: Abstraction has has 67 places, 43 transitions, 128 flow [2020-10-11 18:48:21,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:48:21,562 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:48:21,562 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:48:21,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:48:21,562 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:48:21,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:48:21,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1172225499, now seen corresponding path program 1 times [2020-10-11 18:48:21,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:48:21,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392529864] [2020-10-11 18:48:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:48:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:48:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:48:21,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392529864] [2020-10-11 18:48:21,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:48:21,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:48:21,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311828172] [2020-10-11 18:48:21,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:48:21,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:48:21,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:48:21,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:48:21,837 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 56 [2020-10-11 18:48:21,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 43 transitions, 128 flow. Second operand 7 states. [2020-10-11 18:48:21,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:48:21,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 56 [2020-10-11 18:48:21,838 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:48:21,976 INFO L129 PetriNetUnfolder]: 4/49 cut-off events. [2020-10-11 18:48:21,976 INFO L130 PetriNetUnfolder]: For 33/36 co-relation queries the response was YES. [2020-10-11 18:48:21,977 INFO L80 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 49 events. 4/49 cut-off events. For 33/36 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 2/51 useless extension candidates. Maximal degree in co-relation 95. Up to 5 conditions per place. [2020-10-11 18:48:21,977 INFO L132 encePairwiseOnDemand]: 49/56 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2020-10-11 18:48:21,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 48 transitions, 182 flow [2020-10-11 18:48:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:48:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:48:21,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 458 transitions. [2020-10-11 18:48:21,980 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2020-10-11 18:48:21,980 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 458 transitions. [2020-10-11 18:48:21,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 458 transitions. [2020-10-11 18:48:21,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:48:21,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 458 transitions. [2020-10-11 18:48:21,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:48:21,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:48:21,984 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:48:21,984 INFO L185 Difference]: Start difference. First operand has 67 places, 43 transitions, 128 flow. Second operand 10 states and 458 transitions. [2020-10-11 18:48:21,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 48 transitions, 182 flow [2020-10-11 18:48:21,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 142 flow, removed 14 selfloop flow, removed 9 redundant places. [2020-10-11 18:48:21,987 INFO L241 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2020-10-11 18:48:21,987 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2020-10-11 18:48:21,987 INFO L341 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2020-10-11 18:48:21,987 INFO L481 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2020-10-11 18:48:21,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:48:21,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:48:21,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:48:21 BasicIcfg [2020-10-11 18:48:21,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:48:21,997 INFO L168 Benchmark]: Toolchain (without parser) took 3992.35 ms. Allocated memory was 254.3 MB in the beginning and 376.4 MB in the end (delta: 122.2 MB). Free memory was 210.2 MB in the beginning and 311.2 MB in the end (delta: -101.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:48:21,997 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 254.3 MB. Free memory is still 230.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:48:21,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.93 ms. Allocated memory was 254.3 MB in the beginning and 321.9 MB in the end (delta: 67.6 MB). Free memory was 210.2 MB in the beginning and 275.3 MB in the end (delta: -65.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:48:21,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.96 ms. Allocated memory is still 321.9 MB. Free memory was 275.3 MB in the beginning and 272.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:48:22,000 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 ms. Allocated memory is still 321.9 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:48:22,001 INFO L168 Benchmark]: RCFGBuilder took 500.80 ms. Allocated memory is still 321.9 MB. Free memory was 272.7 MB in the beginning and 250.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:48:22,002 INFO L168 Benchmark]: TraceAbstraction took 2676.18 ms. Allocated memory was 321.9 MB in the beginning and 376.4 MB in the end (delta: 54.5 MB). Free memory was 250.9 MB in the beginning and 311.2 MB in the end (delta: -60.2 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:48:22,006 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 254.3 MB. Free memory is still 230.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 733.93 ms. Allocated memory was 254.3 MB in the beginning and 321.9 MB in the end (delta: 67.6 MB). Free memory was 210.2 MB in the beginning and 275.3 MB in the end (delta: -65.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.96 ms. Allocated memory is still 321.9 MB. Free memory was 275.3 MB in the beginning and 272.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.63 ms. Allocated memory is still 321.9 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 500.80 ms. Allocated memory is still 321.9 MB. Free memory was 272.7 MB in the beginning and 250.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2676.18 ms. Allocated memory was 321.9 MB in the beginning and 376.4 MB in the end (delta: 54.5 MB). Free memory was 250.9 MB in the beginning and 311.2 MB in the end (delta: -60.2 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 105 SDslu, 280 SDs, 0 SdLazy, 236 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 14069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...