/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:13:22,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:13:22,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:13:22,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:13:22,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:13:22,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:13:22,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:13:22,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:13:22,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:13:22,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:13:22,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:13:22,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:13:22,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:13:22,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:13:22,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:13:22,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:13:22,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:13:22,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:13:22,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:13:22,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:13:22,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:13:22,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:13:22,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:13:22,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:13:22,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:13:22,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:13:22,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:13:22,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:13:22,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:13:22,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:13:22,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:13:22,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:13:22,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:13:22,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:13:22,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:13:22,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:13:22,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 01:13:22,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:13:22,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:13:22,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:13:22,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:13:22,637 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:13:22,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:13:22,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:13:22,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:13:22,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:13:22,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:13:22,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:13:22,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:13:22,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:13:22,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:13:22,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:13:22,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:13:22,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:13:22,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:13:22,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:13:22,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:13:22,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:13:22,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:13:22,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:13:22,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:13:22,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:13:22,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:13:22,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:13:22,646 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:13:22,648 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:13:22,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:13:22,648 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:13:22,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:13:22,942 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:13:22,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:13:22,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:13:22,947 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:13:22,948 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2020-10-06 01:13:23,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d924117c0/bc0ed1ac41ec4d8794940df192ca2957/FLAGc6f2df656 [2020-10-06 01:13:23,563 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:13:23,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_tso.oepc.i [2020-10-06 01:13:23,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d924117c0/bc0ed1ac41ec4d8794940df192ca2957/FLAGc6f2df656 [2020-10-06 01:13:23,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d924117c0/bc0ed1ac41ec4d8794940df192ca2957 [2020-10-06 01:13:23,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:13:23,841 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:13:23,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:13:23,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:13:23,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:13:23,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:13:23" (1/1) ... [2020-10-06 01:13:23,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb00e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:23, skipping insertion in model container [2020-10-06 01:13:23,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:13:23" (1/1) ... [2020-10-06 01:13:23,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:13:23,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:13:24,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:13:24,383 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:13:24,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:13:24,518 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:13:24,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24 WrapperNode [2020-10-06 01:13:24,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:13:24,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:13:24,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:13:24,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:13:24,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24" (1/1) ... [2020-10-06 01:13:24,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24" (1/1) ... [2020-10-06 01:13:24,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:13:24,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:13:24,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:13:24,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:13:24,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24" (1/1) ... [2020-10-06 01:13:24,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24" (1/1) ... [2020-10-06 01:13:24,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24" (1/1) ... [2020-10-06 01:13:24,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24" (1/1) ... [2020-10-06 01:13:24,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24" (1/1) ... [2020-10-06 01:13:24,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24" (1/1) ... [2020-10-06 01:13:24,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24" (1/1) ... [2020-10-06 01:13:24,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:13:24,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:13:24,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:13:24,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:13:24,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24" (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 [2020-10-06 01:13:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:13:24,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:13:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:13:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:13:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:13:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:13:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:13:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:13:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:13:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:13:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:13:24,677 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:13:24,998 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:13:24,998 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:13:25,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:13:25 BoogieIcfgContainer [2020-10-06 01:13:25,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:13:25,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:13:25,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:13:25,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:13:25,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:13:23" (1/3) ... [2020-10-06 01:13:25,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792dccdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:13:25, skipping insertion in model container [2020-10-06 01:13:25,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:13:24" (2/3) ... [2020-10-06 01:13:25,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792dccdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:13:25, skipping insertion in model container [2020-10-06 01:13:25,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:13:25" (3/3) ... [2020-10-06 01:13:25,022 INFO L109 eAbstractionObserver]: Analyzing ICFG safe036_tso.oepc.i [2020-10-06 01:13:25,045 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:13:25,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:13:25,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:13:25,053 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:13:25,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,081 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,084 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,087 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,087 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,092 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,092 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,092 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,093 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,099 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,099 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,100 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:13:25,115 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-06 01:13:25,132 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:13:25,133 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:13:25,134 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:13:25,134 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:13:25,134 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:13:25,135 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:13:25,135 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:13:25,135 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:13:25,149 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-10-06 01:13:25,150 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-06 01:13:25,190 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-06 01:13:25,191 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:13:25,196 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 34 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. [2020-10-06 01:13:25,198 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-10-06 01:13:25,217 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-10-06 01:13:25,217 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:13:25,218 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 34 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. [2020-10-06 01:13:25,220 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-10-06 01:13:25,221 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:13:26,468 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1294 [2020-10-06 01:13:26,469 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-10-06 01:13:26,473 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-10-06 01:13:26,486 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-06 01:13:26,488 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-06 01:13:26,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-06 01:13:26,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:26,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-06 01:13:26,496 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:26,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:26,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1873752150, now seen corresponding path program 1 times [2020-10-06 01:13:26,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:26,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321245016] [2020-10-06 01:13:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:26,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321245016] [2020-10-06 01:13:26,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:26,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:13:26,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [967946680] [2020-10-06 01:13:26,787 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:26,792 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:26,806 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-06 01:13:26,806 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:26,812 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:26,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:26,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:26,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:26,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:26,831 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-10-06 01:13:26,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:26,881 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-10-06 01:13:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:13:26,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-06 01:13:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:26,892 INFO L225 Difference]: With dead ends: 63 [2020-10-06 01:13:26,892 INFO L226 Difference]: Without dead ends: 40 [2020-10-06 01:13:26,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:13:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-06 01:13:26,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-06 01:13:26,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-06 01:13:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-06 01:13:26,933 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 6 [2020-10-06 01:13:26,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:26,933 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-06 01:13:26,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-06 01:13:26,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:13:26,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:26,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:26,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:13:26,935 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:26,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:26,936 INFO L82 PathProgramCache]: Analyzing trace with hash -771561330, now seen corresponding path program 1 times [2020-10-06 01:13:26,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:26,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848009928] [2020-10-06 01:13:26,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:27,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848009928] [2020-10-06 01:13:27,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:27,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:27,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1698416252] [2020-10-06 01:13:27,016 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:27,017 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:27,020 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-06 01:13:27,020 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:27,020 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:27,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:13:27,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:27,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:13:27,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:13:27,023 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 5 states. [2020-10-06 01:13:27,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:27,062 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-10-06 01:13:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:13:27,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-06 01:13:27,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:27,064 INFO L225 Difference]: With dead ends: 35 [2020-10-06 01:13:27,064 INFO L226 Difference]: Without dead ends: 28 [2020-10-06 01:13:27,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:13:27,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-06 01:13:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-06 01:13:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-06 01:13:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-10-06 01:13:27,074 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-10-06 01:13:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:27,074 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-10-06 01:13:27,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:13:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-10-06 01:13:27,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:13:27,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:27,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:27,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:13:27,076 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:27,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1059449318, now seen corresponding path program 1 times [2020-10-06 01:13:27,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:27,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649205645] [2020-10-06 01:13:27,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:27,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649205645] [2020-10-06 01:13:27,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:27,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:27,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1683299536] [2020-10-06 01:13:27,208 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:27,210 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:27,216 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-10-06 01:13:27,217 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:27,239 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:27,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:27,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:27,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:27,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:27,241 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 4 states. [2020-10-06 01:13:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:27,269 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-10-06 01:13:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:13:27,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 01:13:27,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:27,271 INFO L225 Difference]: With dead ends: 35 [2020-10-06 01:13:27,271 INFO L226 Difference]: Without dead ends: 22 [2020-10-06 01:13:27,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:13:27,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-06 01:13:27,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-06 01:13:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-06 01:13:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-10-06 01:13:27,278 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 12 [2020-10-06 01:13:27,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:27,280 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-10-06 01:13:27,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-10-06 01:13:27,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:13:27,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:13:27,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:13:27,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:13:27,281 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:13:27,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:13:27,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1252547174, now seen corresponding path program 2 times [2020-10-06 01:13:27,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:13:27,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132062932] [2020-10-06 01:13:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:13:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:13:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:13:27,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132062932] [2020-10-06 01:13:27,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:13:27,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:13:27,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [405254499] [2020-10-06 01:13:27,325 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:13:27,326 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:13:27,329 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-06 01:13:27,329 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:13:27,378 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:13:27,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:13:27,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:13:27,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:13:27,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:13:27,380 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 4 states. [2020-10-06 01:13:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:13:27,396 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-10-06 01:13:27,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:13:27,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 01:13:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:13:27,397 INFO L225 Difference]: With dead ends: 21 [2020-10-06 01:13:27,397 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:13:27,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:13:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:13:27,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:13:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:13:27,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:13:27,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-06 01:13:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:13:27,399 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:13:27,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:13:27,399 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:13:27,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:13:27,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:13:27,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:13:27 BasicIcfg [2020-10-06 01:13:27,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:13:27,406 INFO L168 Benchmark]: Toolchain (without parser) took 3563.96 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 101.4 MB in the beginning and 162.7 MB in the end (delta: -61.3 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:27,407 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-06 01:13:27,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.39 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.2 MB in the beginning and 160.3 MB in the end (delta: -59.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:27,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.86 ms. Allocated memory is still 202.9 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:27,409 INFO L168 Benchmark]: Boogie Preprocessor took 26.64 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:27,410 INFO L168 Benchmark]: RCFGBuilder took 403.61 ms. Allocated memory is still 202.9 MB. Free memory was 156.4 MB in the beginning and 136.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:27,411 INFO L168 Benchmark]: TraceAbstraction took 2399.26 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 135.8 MB in the beginning and 162.7 MB in the end (delta: -26.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:13:27,416 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.39 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.2 MB in the beginning and 160.3 MB in the end (delta: -59.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.86 ms. Allocated memory is still 202.9 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.64 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 403.61 ms. Allocated memory is still 202.9 MB. Free memory was 156.4 MB in the beginning and 136.5 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2399.26 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 135.8 MB in the beginning and 162.7 MB in the end (delta: -26.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 360 VarBasedMoverChecksPositive, 17 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1294 CheckedPairsTotal, 49 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 56 SDtfs, 43 SDslu, 68 SDs, 0 SdLazy, 43 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 817 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...