/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:44:28,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:44:28,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:44:28,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:44:28,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:44:28,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:44:28,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:44:28,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:44:28,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:44:28,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:44:28,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:44:28,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:44:28,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:44:28,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:44:28,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:44:28,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:44:28,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:44:28,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:44:28,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:44:28,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:44:28,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:44:28,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:44:28,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:44:28,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:44:28,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:44:28,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:44:28,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:44:28,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:44:28,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:44:28,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:44:28,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:44:28,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:44:28,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:44:28,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:44:28,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:44:28,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:44:28,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:44:28,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:44:28,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:44:28,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:44:28,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:44:28,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:44:28,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:44:28,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:44:28,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:44:28,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:44:28,783 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:44:28,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:44:28,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:44:28,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:44:28,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:44:28,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:44:28,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:44:28,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:44:28,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:44:28,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:44:28,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:44:28,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:44:28,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:44:28,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:44:28,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:44:28,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:44:28,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:44:28,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:44:28,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:44:28,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:44:28,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:44:28,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:44:28,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:44:28,787 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:44:28,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:44:28,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:44:29,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:44:29,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:44:29,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:44:29,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:44:29,102 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:44:29,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-04-18 02:44:29,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02bd8487e/15a4a97cdd10408986da0548c2ec5220/FLAG3e4ec19a8 [2020-04-18 02:44:29,693 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:44:29,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-04-18 02:44:29,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02bd8487e/15a4a97cdd10408986da0548c2ec5220/FLAG3e4ec19a8 [2020-04-18 02:44:30,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02bd8487e/15a4a97cdd10408986da0548c2ec5220 [2020-04-18 02:44:30,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:44:30,069 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:44:30,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:44:30,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:44:30,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:44:30,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:44:30" (1/1) ... [2020-04-18 02:44:30,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d9a0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30, skipping insertion in model container [2020-04-18 02:44:30,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:44:30" (1/1) ... [2020-04-18 02:44:30,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:44:30,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:44:30,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:44:30,635 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:44:30,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:44:30,770 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:44:30,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30 WrapperNode [2020-04-18 02:44:30,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:44:30,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:44:30,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:44:30,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:44:30,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30" (1/1) ... [2020-04-18 02:44:30,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30" (1/1) ... [2020-04-18 02:44:30,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:44:30,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:44:30,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:44:30,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:44:30,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30" (1/1) ... [2020-04-18 02:44:30,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30" (1/1) ... [2020-04-18 02:44:30,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30" (1/1) ... [2020-04-18 02:44:30,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30" (1/1) ... [2020-04-18 02:44:30,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30" (1/1) ... [2020-04-18 02:44:30,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30" (1/1) ... [2020-04-18 02:44:30,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30" (1/1) ... [2020-04-18 02:44:30,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:44:30,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:44:30,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:44:30,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:44:30,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:44:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:44:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:44:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:44:30,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:44:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:44:30,932 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:44:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:44:30,932 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:44:30,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:44:30,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:44:30,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:44:30,935 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:44:31,310 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:44:31,311 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:44:31,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:44:31 BoogieIcfgContainer [2020-04-18 02:44:31,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:44:31,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:44:31,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:44:31,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:44:31,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:44:30" (1/3) ... [2020-04-18 02:44:31,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c13952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:44:31, skipping insertion in model container [2020-04-18 02:44:31,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:44:30" (2/3) ... [2020-04-18 02:44:31,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c13952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:44:31, skipping insertion in model container [2020-04-18 02:44:31,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:44:31" (3/3) ... [2020-04-18 02:44:31,324 INFO L109 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2020-04-18 02:44:31,335 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:44:31,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:44:31,344 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:44:31,345 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:44:31,371 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,371 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,371 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,372 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,372 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,373 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,373 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,374 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,374 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,374 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,375 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,375 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,379 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,379 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,380 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,380 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,386 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,386 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,387 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,387 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:44:31,405 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 02:44:31,427 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:44:31,427 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:44:31,428 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:44:31,428 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:44:31,428 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:44:31,428 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:44:31,428 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:44:31,429 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:44:31,445 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 54 transitions, 118 flow [2020-04-18 02:44:31,447 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-04-18 02:44:31,487 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-04-18 02:44:31,487 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:44:31,492 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 02:44:31,494 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-04-18 02:44:31,512 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-04-18 02:44:31,513 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:44:31,513 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 02:44:31,515 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 02:44:31,516 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:44:33,059 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1300 [2020-04-18 02:44:33,059 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2020-04-18 02:44:33,063 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 02:44:33,077 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 02:44:33,079 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 02:44:33,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 02:44:33,086 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:44:33,087 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 02:44:33,088 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:44:33,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:44:33,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1812706200, now seen corresponding path program 1 times [2020-04-18 02:44:33,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:44:33,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130348880] [2020-04-18 02:44:33,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:44:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:44:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:44:33,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130348880] [2020-04-18 02:44:33,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:44:33,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:44:33,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988348275] [2020-04-18 02:44:33,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:44:33,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:44:33,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:44:33,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:44:33,346 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 02:44:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:44:33,388 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-04-18 02:44:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:44:33,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 02:44:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:44:33,400 INFO L225 Difference]: With dead ends: 72 [2020-04-18 02:44:33,401 INFO L226 Difference]: Without dead ends: 56 [2020-04-18 02:44:33,402 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:44:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-18 02:44:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-18 02:44:33,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-18 02:44:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-04-18 02:44:33,446 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-04-18 02:44:33,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:44:33,446 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-04-18 02:44:33,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:44:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-04-18 02:44:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 02:44:33,448 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:44:33,448 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:44:33,448 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:44:33,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:44:33,449 INFO L82 PathProgramCache]: Analyzing trace with hash 343673099, now seen corresponding path program 1 times [2020-04-18 02:44:33,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:44:33,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274942847] [2020-04-18 02:44:33,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:44:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:44:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:44:33,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274942847] [2020-04-18 02:44:33,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:44:33,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:44:33,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378295229] [2020-04-18 02:44:33,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:44:33,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:44:33,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:44:33,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:44:33,564 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-04-18 02:44:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:44:33,581 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2020-04-18 02:44:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:44:33,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-04-18 02:44:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:44:33,584 INFO L225 Difference]: With dead ends: 55 [2020-04-18 02:44:33,584 INFO L226 Difference]: Without dead ends: 55 [2020-04-18 02:44:33,586 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:44:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-04-18 02:44:33,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-04-18 02:44:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-04-18 02:44:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 111 transitions. [2020-04-18 02:44:33,600 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 111 transitions. Word has length 7 [2020-04-18 02:44:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:44:33,601 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 111 transitions. [2020-04-18 02:44:33,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:44:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 111 transitions. [2020-04-18 02:44:33,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:44:33,602 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:44:33,602 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:44:33,602 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:44:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:44:33,602 INFO L82 PathProgramCache]: Analyzing trace with hash 2063912123, now seen corresponding path program 1 times [2020-04-18 02:44:33,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:44:33,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923371017] [2020-04-18 02:44:33,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:44:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:44:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:44:33,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923371017] [2020-04-18 02:44:33,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:44:33,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:44:33,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552367175] [2020-04-18 02:44:33,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:44:33,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:44:33,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:44:33,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:44:33,720 INFO L87 Difference]: Start difference. First operand 55 states and 111 transitions. Second operand 4 states. [2020-04-18 02:44:33,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:44:33,770 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-04-18 02:44:33,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:44:33,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-04-18 02:44:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:44:33,772 INFO L225 Difference]: With dead ends: 56 [2020-04-18 02:44:33,772 INFO L226 Difference]: Without dead ends: 40 [2020-04-18 02:44:33,772 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:44:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-18 02:44:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-18 02:44:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-18 02:44:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-18 02:44:33,783 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 8 [2020-04-18 02:44:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:44:33,783 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-18 02:44:33,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:44:33,784 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-18 02:44:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:44:33,785 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:44:33,785 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:44:33,786 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:44:33,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:44:33,786 INFO L82 PathProgramCache]: Analyzing trace with hash -444073675, now seen corresponding path program 1 times [2020-04-18 02:44:33,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:44:33,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914894264] [2020-04-18 02:44:33,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:44:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:44:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:44:33,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914894264] [2020-04-18 02:44:33,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:44:33,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:44:33,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351537127] [2020-04-18 02:44:33,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:44:33,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:44:33,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:44:33,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:44:33,859 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 3 states. [2020-04-18 02:44:33,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:44:33,884 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2020-04-18 02:44:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:44:33,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 02:44:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:44:33,888 INFO L225 Difference]: With dead ends: 51 [2020-04-18 02:44:33,888 INFO L226 Difference]: Without dead ends: 41 [2020-04-18 02:44:33,889 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:44:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-04-18 02:44:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-04-18 02:44:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-04-18 02:44:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2020-04-18 02:44:33,895 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 60 transitions. Word has length 9 [2020-04-18 02:44:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:44:33,896 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-04-18 02:44:33,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:44:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 60 transitions. [2020-04-18 02:44:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:44:33,897 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:44:33,897 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:44:33,897 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:44:33,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:44:33,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1686734005, now seen corresponding path program 1 times [2020-04-18 02:44:33,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:44:33,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115485371] [2020-04-18 02:44:33,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:44:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:44:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:44:33,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115485371] [2020-04-18 02:44:33,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:44:33,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:44:33,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311781867] [2020-04-18 02:44:33,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:44:33,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:44:33,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:44:33,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:44:33,932 INFO L87 Difference]: Start difference. First operand 39 states and 60 transitions. Second operand 3 states. [2020-04-18 02:44:33,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:44:33,950 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2020-04-18 02:44:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:44:33,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 02:44:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:44:33,953 INFO L225 Difference]: With dead ends: 42 [2020-04-18 02:44:33,953 INFO L226 Difference]: Without dead ends: 31 [2020-04-18 02:44:33,953 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:44:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-18 02:44:33,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-04-18 02:44:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-04-18 02:44:33,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-04-18 02:44:33,961 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-04-18 02:44:33,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:44:33,962 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-04-18 02:44:33,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:44:33,962 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-04-18 02:44:33,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:44:33,963 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:44:33,963 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:44:33,964 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:44:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:44:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash -881401391, now seen corresponding path program 1 times [2020-04-18 02:44:33,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:44:33,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080234561] [2020-04-18 02:44:33,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:44:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:44:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:44:34,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080234561] [2020-04-18 02:44:34,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:44:34,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:44:34,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56911817] [2020-04-18 02:44:34,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:44:34,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:44:34,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:44:34,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:44:34,033 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 5 states. [2020-04-18 02:44:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:44:34,064 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-04-18 02:44:34,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:44:34,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 02:44:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:44:34,065 INFO L225 Difference]: With dead ends: 25 [2020-04-18 02:44:34,065 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:44:34,066 INFO L678 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 [2020-04-18 02:44:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:44:34,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:44:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:44:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:44:34,067 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-04-18 02:44:34,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:44:34,067 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:44:34,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:44:34,067 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:44:34,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:44:34,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:44:34 BasicIcfg [2020-04-18 02:44:34,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:44:34,078 INFO L168 Benchmark]: Toolchain (without parser) took 4026.07 ms. Allocated memory was 135.3 MB in the beginning and 256.9 MB in the end (delta: 121.6 MB). Free memory was 98.4 MB in the beginning and 184.5 MB in the end (delta: -86.1 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:44:34,079 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 135.3 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:44:34,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.00 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 96.7 MB in the beginning and 157.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:44:34,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.67 ms. Allocated memory is still 199.8 MB. Free memory was 157.0 MB in the beginning and 154.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:44:34,087 INFO L168 Benchmark]: Boogie Preprocessor took 26.74 ms. Allocated memory is still 199.8 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:44:34,089 INFO L168 Benchmark]: RCFGBuilder took 464.56 ms. Allocated memory is still 199.8 MB. Free memory was 152.8 MB in the beginning and 133.4 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:44:34,089 INFO L168 Benchmark]: TraceAbstraction took 2756.33 ms. Allocated memory was 199.8 MB in the beginning and 256.9 MB in the end (delta: 57.1 MB). Free memory was 132.3 MB in the beginning and 184.5 MB in the end (delta: -52.2 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:44:34,100 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 135.3 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.00 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 96.7 MB in the beginning and 157.0 MB in the end (delta: -60.2 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.67 ms. Allocated memory is still 199.8 MB. Free memory was 157.0 MB in the beginning and 154.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.74 ms. Allocated memory is still 199.8 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.56 ms. Allocated memory is still 199.8 MB. Free memory was 152.8 MB in the beginning and 133.4 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2756.33 ms. Allocated memory was 199.8 MB in the beginning and 256.9 MB in the end (delta: 57.1 MB). Free memory was 132.3 MB in the beginning and 184.5 MB in the end (delta: -52.2 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 59 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 11 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 379 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1300 CheckedPairsTotal, 46 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, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 79 SDtfs, 33 SDslu, 63 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 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, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 861 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...