/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/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:35:29,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:35:29,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:35:29,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:35:29,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:35:29,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:35:29,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:35:29,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:35:29,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:35:29,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:35:29,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:35:29,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:35:29,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:35:29,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:35:29,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:35:29,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:35:29,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:35:29,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:35:29,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:35:29,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:35:29,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:35:29,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:35:29,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:35:29,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:35:29,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 01:35:29,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 01:35:29,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 01:35:29,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 01:35:29,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 01:35:29,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 01:35:29,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:35:29,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:35:29,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:35:29,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:35:29,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:35:29,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:35:29,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:35:29,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:35:29,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:35:29,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:35:29,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:35:29,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:35:29,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:35:29,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:35:29,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:35:29,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:35:29,809 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:35:29,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:35:29,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:35:29,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:35:29,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:35:29,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:35:29,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:35:29,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:35:29,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:35:29,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:35:29,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:35:29,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:35:29,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:35:29,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:35:29,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:35:29,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:35:29,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:35:29,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:35:29,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:35:29,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:35:29,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:35:29,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:35:29,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:35:29,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:35:29,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:35:30,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:35:30,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:35:30,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:35:30,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:35:30,116 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:35:30,116 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-10-16 01:35:30,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ab62ac4/7b35829eb19b4e99abe1b3a6ac241f6b/FLAGde851b9e6 [2020-10-16 01:35:30,592 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:35:30,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-10-16 01:35:30,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ab62ac4/7b35829eb19b4e99abe1b3a6ac241f6b/FLAGde851b9e6 [2020-10-16 01:35:30,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89ab62ac4/7b35829eb19b4e99abe1b3a6ac241f6b [2020-10-16 01:35:30,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:35:30,930 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:35:30,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:35:30,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:35:30,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:35:30,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:35:30" (1/1) ... [2020-10-16 01:35:30,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669a5c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:30, skipping insertion in model container [2020-10-16 01:35:30,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:35:30" (1/1) ... [2020-10-16 01:35:30,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:35:30,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:35:31,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:35:31,439 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:35:31,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:35:31,738 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:35:31,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31 WrapperNode [2020-10-16 01:35:31,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:35:31,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:35:31,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:35:31,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:35:31,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31" (1/1) ... [2020-10-16 01:35:31,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31" (1/1) ... [2020-10-16 01:35:31,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:35:31,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:35:31,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:35:31,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:35:31,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31" (1/1) ... [2020-10-16 01:35:31,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31" (1/1) ... [2020-10-16 01:35:31,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31" (1/1) ... [2020-10-16 01:35:31,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31" (1/1) ... [2020-10-16 01:35:31,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31" (1/1) ... [2020-10-16 01:35:31,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31" (1/1) ... [2020-10-16 01:35:31,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31" (1/1) ... [2020-10-16 01:35:31,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:35:31,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:35:31,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:35:31,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:35:31,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31" (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 [2020-10-16 01:35:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:35:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:35:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:35:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:35:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:35:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:35:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:35:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:35:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:35:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:35:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:35:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:35:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:35:31,937 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:35:32,244 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:35:32,244 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:35:32,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:35:32 BoogieIcfgContainer [2020-10-16 01:35:32,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:35:32,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:35:32,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:35:32,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:35:32,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:35:30" (1/3) ... [2020-10-16 01:35:32,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430089a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:35:32, skipping insertion in model container [2020-10-16 01:35:32,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:31" (2/3) ... [2020-10-16 01:35:32,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430089a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:35:32, skipping insertion in model container [2020-10-16 01:35:32,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:35:32" (3/3) ... [2020-10-16 01:35:32,254 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2020-10-16 01:35:32,264 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:35:32,270 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:35:32,271 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:35:32,308 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,316 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,317 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,317 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,318 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,321 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,326 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,326 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,332 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,332 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,332 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,332 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,335 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,336 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,336 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,336 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:35:32,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:35:32,372 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:35:32,373 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:35:32,373 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:35:32,373 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:35:32,373 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:35:32,373 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:35:32,373 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:35:32,374 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:35:32,386 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:35:32,429 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:35:32,429 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:35:32,434 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:35:32,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:35:32,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:35:32,442 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:35:32,444 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:35:32,446 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:35:32,447 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:35:32,465 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:35:32,466 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:35:32,466 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:35:32,468 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:35:33,820 INFO L132 LiptonReduction]: Checked pairs total: 1702 [2020-10-16 01:35:33,820 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 01:35:33,823 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1383 [2020-10-16 01:35:33,830 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-10-16 01:35:33,831 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:35:33,831 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:35:33,832 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:35:33,832 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:35:33,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:35:33,838 INFO L82 PathProgramCache]: Analyzing trace with hash 967519021, now seen corresponding path program 1 times [2020-10-16 01:35:33,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:35:33,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460237411] [2020-10-16 01:35:33,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:35:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:35:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:35:34,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460237411] [2020-10-16 01:35:34,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:35:34,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:35:34,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891365582] [2020-10-16 01:35:34,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:35:34,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:35:34,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:35:34,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:35:34,087 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 111 [2020-10-16 01:35:34,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:35:34,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:35:34,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 111 [2020-10-16 01:35:34,090 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:35:34,110 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:35:34,110 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:35:34,110 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:35:34,112 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:35:34,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 01:35:34,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:35:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:35:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 01:35:34,127 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8678678678678678 [2020-10-16 01:35:34,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 01:35:34,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 01:35:34,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:35:34,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 01:35:34,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:35:34,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:35:34,143 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:35:34,146 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 289 transitions. [2020-10-16 01:35:34,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 01:35:34,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:35:34,151 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:35:34,154 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 01:35:34,155 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:35:34,155 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:35:34,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:35:34,155 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:35:34,155 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:35:34,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:35:34,156 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:35:34,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:35:34,156 INFO L82 PathProgramCache]: Analyzing trace with hash -71690202, now seen corresponding path program 1 times [2020-10-16 01:35:34,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:35:34,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917125369] [2020-10-16 01:35:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:35:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:35:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:35:34,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917125369] [2020-10-16 01:35:34,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:35:34,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:35:34,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084382507] [2020-10-16 01:35:34,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:35:34,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:35:34,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:35:34,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:35:34,283 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 01:35:34,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 01:35:34,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:35:34,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 01:35:34,284 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:35:34,327 INFO L129 PetriNetUnfolder]: 13/54 cut-off events. [2020-10-16 01:35:34,327 INFO L130 PetriNetUnfolder]: For 14/18 co-relation queries the response was YES. [2020-10-16 01:35:34,328 INFO L80 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 54 events. 13/54 cut-off events. For 14/18 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 170 event pairs, 3 based on Foata normal form. 9/61 useless extension candidates. Maximal degree in co-relation 100. Up to 15 conditions per place. [2020-10-16 01:35:34,329 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 5 selfloop transitions, 3 changer transitions 4/23 dead transitions. [2020-10-16 01:35:34,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 87 flow [2020-10-16 01:35:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:35:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:35:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2020-10-16 01:35:34,333 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8153153153153153 [2020-10-16 01:35:34,333 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 362 transitions. [2020-10-16 01:35:34,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 362 transitions. [2020-10-16 01:35:34,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:35:34,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 362 transitions. [2020-10-16 01:35:34,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:35:34,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:35:34,338 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:35:34,338 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 362 transitions. [2020-10-16 01:35:34,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 87 flow [2020-10-16 01:35:34,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 81 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:35:34,340 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 60 flow [2020-10-16 01:35:34,340 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 01:35:34,341 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:35:34,341 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 60 flow [2020-10-16 01:35:34,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:35:34,342 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:35:34,342 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:35:34,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:35:34,342 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:35:34,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:35:34,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1490778102, now seen corresponding path program 1 times [2020-10-16 01:35:34,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:35:34,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841469997] [2020-10-16 01:35:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:35:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:35:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:35:34,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841469997] [2020-10-16 01:35:34,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:35:34,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:35:34,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642248207] [2020-10-16 01:35:34,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:35:34,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:35:34,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:35:34,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:35:34,395 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 111 [2020-10-16 01:35:34,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 60 flow. Second operand 3 states. [2020-10-16 01:35:34,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:35:34,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 111 [2020-10-16 01:35:34,396 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:35:34,408 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2020-10-16 01:35:34,409 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-16 01:35:34,409 INFO L80 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 1/20 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 1 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 38. Up to 6 conditions per place. [2020-10-16 01:35:34,410 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:35:34,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 17 transitions, 66 flow [2020-10-16 01:35:34,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:35:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:35:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 01:35:34,431 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8678678678678678 [2020-10-16 01:35:34,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 01:35:34,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 01:35:34,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:35:34,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 01:35:34,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:35:34,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:35:34,433 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:35:34,433 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 60 flow. Second operand 3 states and 289 transitions. [2020-10-16 01:35:34,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 17 transitions, 66 flow [2020-10-16 01:35:34,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 58 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 01:35:34,438 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 60 flow [2020-10-16 01:35:34,438 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 01:35:34,438 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:35:34,439 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 60 flow [2020-10-16 01:35:34,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:35:34,439 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:35:34,439 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:35:34,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:35:34,439 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:35:34,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:35:34,440 INFO L82 PathProgramCache]: Analyzing trace with hash -875238721, now seen corresponding path program 1 times [2020-10-16 01:35:34,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:35:34,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536270308] [2020-10-16 01:35:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:35:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:35:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:35:34,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536270308] [2020-10-16 01:35:34,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:35:34,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:35:34,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137120919] [2020-10-16 01:35:34,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:35:34,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:35:34,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:35:34,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:35:34,482 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 01:35:34,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 60 flow. Second operand 4 states. [2020-10-16 01:35:34,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:35:34,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 01:35:34,483 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:35:34,515 INFO L129 PetriNetUnfolder]: 2/33 cut-off events. [2020-10-16 01:35:34,515 INFO L130 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2020-10-16 01:35:34,516 INFO L80 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 33 events. 2/33 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 1 based on Foata normal form. 4/36 useless extension candidates. Maximal degree in co-relation 69. Up to 7 conditions per place. [2020-10-16 01:35:34,516 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 4 selfloop transitions, 2 changer transitions 3/20 dead transitions. [2020-10-16 01:35:34,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 20 transitions, 91 flow [2020-10-16 01:35:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:35:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:35:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2020-10-16 01:35:34,519 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8054054054054054 [2020-10-16 01:35:34,519 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2020-10-16 01:35:34,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2020-10-16 01:35:34,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:35:34,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2020-10-16 01:35:34,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:35:34,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:35:34,522 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:35:34,523 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 60 flow. Second operand 5 states and 447 transitions. [2020-10-16 01:35:34,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 20 transitions, 91 flow [2020-10-16 01:35:34,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 81 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 01:35:34,524 INFO L241 Difference]: Finished difference. Result has 35 places, 17 transitions, 68 flow [2020-10-16 01:35:34,525 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2020-10-16 01:35:34,525 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 01:35:34,525 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 17 transitions, 68 flow [2020-10-16 01:35:34,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:35:34,525 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:35:34,525 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:35:34,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:35:34,526 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:35:34,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:35:34,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1880162457, now seen corresponding path program 1 times [2020-10-16 01:35:34,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:35:34,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274974700] [2020-10-16 01:35:34,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:35:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:35:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:35:34,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274974700] [2020-10-16 01:35:34,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:35:34,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:35:34,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644322561] [2020-10-16 01:35:34,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:35:34,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:35:34,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:35:34,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:35:34,566 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 111 [2020-10-16 01:35:34,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 17 transitions, 68 flow. Second operand 4 states. [2020-10-16 01:35:34,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:35:34,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 111 [2020-10-16 01:35:34,567 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:35:34,588 INFO L129 PetriNetUnfolder]: 1/32 cut-off events. [2020-10-16 01:35:34,588 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2020-10-16 01:35:34,589 INFO L80 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 32 events. 1/32 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 1 based on Foata normal form. 2/33 useless extension candidates. Maximal degree in co-relation 68. Up to 7 conditions per place. [2020-10-16 01:35:34,589 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 01:35:34,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 18 transitions, 80 flow [2020-10-16 01:35:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:35:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:35:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2020-10-16 01:35:34,591 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8445945945945946 [2020-10-16 01:35:34,591 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2020-10-16 01:35:34,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2020-10-16 01:35:34,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:35:34,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2020-10-16 01:35:34,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:35:34,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:35:34,594 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:35:34,594 INFO L185 Difference]: Start difference. First operand has 35 places, 17 transitions, 68 flow. Second operand 4 states and 375 transitions. [2020-10-16 01:35:34,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 18 transitions, 80 flow [2020-10-16 01:35:34,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 18 transitions, 68 flow, removed 3 selfloop flow, removed 5 redundant places. [2020-10-16 01:35:34,596 INFO L241 Difference]: Finished difference. Result has 33 places, 17 transitions, 70 flow [2020-10-16 01:35:34,597 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2020-10-16 01:35:34,597 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 01:35:34,597 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 70 flow [2020-10-16 01:35:34,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:35:34,597 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:35:34,597 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:35:34,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:35:34,598 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:35:34,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:35:34,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1468898697, now seen corresponding path program 1 times [2020-10-16 01:35:34,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:35:34,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122553354] [2020-10-16 01:35:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:35:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:35:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:35:34,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122553354] [2020-10-16 01:35:34,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:35:34,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:35:34,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449322799] [2020-10-16 01:35:34,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:35:34,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:35:34,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:35:34,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:35:34,653 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2020-10-16 01:35:34,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:35:34,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:35:34,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2020-10-16 01:35:34,653 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:35:34,671 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2020-10-16 01:35:34,671 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2020-10-16 01:35:34,672 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 0/16 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:35:34,672 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2020-10-16 01:35:34,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 16 transitions, 68 flow [2020-10-16 01:35:34,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:35:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:35:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2020-10-16 01:35:34,674 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7972972972972973 [2020-10-16 01:35:34,674 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2020-10-16 01:35:34,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2020-10-16 01:35:34,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:35:34,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2020-10-16 01:35:34,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:35:34,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:35:34,677 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:35:34,677 INFO L185 Difference]: Start difference. First operand has 33 places, 17 transitions, 70 flow. Second operand 4 states and 354 transitions. [2020-10-16 01:35:34,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 16 transitions, 68 flow [2020-10-16 01:35:34,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 52 flow, removed 1 selfloop flow, removed 7 redundant places. [2020-10-16 01:35:34,679 INFO L241 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2020-10-16 01:35:34,679 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2020-10-16 01:35:34,679 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:35:34,679 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2020-10-16 01:35:34,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:35:34,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:35:34,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:35:34 BasicIcfg [2020-10-16 01:35:34,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:35:34,687 INFO L168 Benchmark]: Toolchain (without parser) took 3755.58 ms. Allocated memory was 249.0 MB in the beginning and 372.8 MB in the end (delta: 123.7 MB). Free memory was 204.4 MB in the beginning and 300.5 MB in the end (delta: -96.1 MB). Peak memory consumption was 27.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:35:34,689 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:35:34,691 INFO L168 Benchmark]: CACSL2BoogieTranslator took 806.43 ms. Allocated memory was 249.0 MB in the beginning and 312.0 MB in the end (delta: 62.9 MB). Free memory was 204.4 MB in the beginning and 264.5 MB in the end (delta: -60.1 MB). Peak memory consumption was 30.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:35:34,692 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.14 ms. Allocated memory is still 312.0 MB. Free memory was 264.5 MB in the beginning and 262.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:35:34,697 INFO L168 Benchmark]: Boogie Preprocessor took 42.63 ms. Allocated memory is still 312.0 MB. Free memory was 262.0 MB in the beginning and 259.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:35:34,698 INFO L168 Benchmark]: RCFGBuilder took 385.84 ms. Allocated memory is still 312.0 MB. Free memory was 259.5 MB in the beginning and 237.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:35:34,699 INFO L168 Benchmark]: TraceAbstraction took 2436.50 ms. Allocated memory was 312.0 MB in the beginning and 372.8 MB in the end (delta: 60.8 MB). Free memory was 237.6 MB in the beginning and 300.5 MB in the end (delta: -62.9 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:35:34,707 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 806.43 ms. Allocated memory was 249.0 MB in the beginning and 312.0 MB in the end (delta: 62.9 MB). Free memory was 204.4 MB in the beginning and 264.5 MB in the end (delta: -60.1 MB). Peak memory consumption was 30.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 76.14 ms. Allocated memory is still 312.0 MB. Free memory was 264.5 MB in the beginning and 262.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 42.63 ms. Allocated memory is still 312.0 MB. Free memory was 262.0 MB in the beginning and 259.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 385.84 ms. Allocated memory is still 312.0 MB. Free memory was 259.5 MB in the beginning and 237.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2436.50 ms. Allocated memory was 312.0 MB in the beginning and 372.8 MB in the end (delta: 60.8 MB). Free memory was 237.6 MB in the beginning and 300.5 MB in the end (delta: -62.9 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 557 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1702 MoverChecksTotal - 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, 69 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: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 24 SDtfs, 11 SDslu, 5 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=5, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 1765 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...