/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-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:31:52,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:31:52,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:31:52,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:31:52,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:31:52,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:31:52,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:31:52,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:31:52,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:31:52,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:31:52,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:31:52,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:31:52,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:31:52,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:31:52,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:31:52,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:31:52,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:31:52,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:31:52,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:31:52,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:31:52,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:31:52,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:31:52,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:31:52,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:31:52,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:31:52,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:31:52,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:31:52,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:31:52,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:31:52,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:31:52,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:31:52,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:31:52,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:31:52,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:31:52,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:31:52,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:31:52,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:31:52,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:31:52,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:31:52,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:31:52,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:31:52,791 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-SemanticLbe-McrStrategy.epf [2020-04-18 11:31:52,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:31:52,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:31:52,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:31:52,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:31:52,829 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:31:52,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:31:52,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:31:52,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:31:52,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:31:52,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:31:52,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:31:52,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:31:52,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:31:52,831 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:31:52,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:31:52,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:31:52,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:31:52,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:31:52,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:31:52,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:31:52,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:31:52,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:31:52,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:31:52,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:31:52,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:31:52,837 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:31:52,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:31:52,838 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:31:52,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:31:52,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:31:53,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:31:53,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:31:53,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:31:53,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:31:53,186 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:31:53,187 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i [2020-04-18 11:31:53,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/629a1fcad/7a588bd13f9343888752175525e336c1/FLAG2511e0282 [2020-04-18 11:31:53,800 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:31:53,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2020-04-18 11:31:53,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/629a1fcad/7a588bd13f9343888752175525e336c1/FLAG2511e0282 [2020-04-18 11:31:54,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/629a1fcad/7a588bd13f9343888752175525e336c1 [2020-04-18 11:31:54,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:31:54,143 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:31:54,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:31:54,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:31:54,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:31:54,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:31:54" (1/1) ... [2020-04-18 11:31:54,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5c7580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54, skipping insertion in model container [2020-04-18 11:31:54,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:31:54" (1/1) ... [2020-04-18 11:31:54,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:31:54,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:31:54,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:31:54,763 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:31:54,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:31:54,910 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:31:54,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54 WrapperNode [2020-04-18 11:31:54,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:31:54,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:31:54,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:31:54,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:31:54,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54" (1/1) ... [2020-04-18 11:31:54,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54" (1/1) ... [2020-04-18 11:31:54,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:31:54,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:31:54,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:31:54,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:31:54,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54" (1/1) ... [2020-04-18 11:31:54,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54" (1/1) ... [2020-04-18 11:31:54,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54" (1/1) ... [2020-04-18 11:31:54,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54" (1/1) ... [2020-04-18 11:31:54,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54" (1/1) ... [2020-04-18 11:31:54,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54" (1/1) ... [2020-04-18 11:31:54,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54" (1/1) ... [2020-04-18 11:31:54,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:31:54,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:31:54,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:31:54,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:31:54,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54" (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 11:31:55,057 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-04-18 11:31:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-04-18 11:31:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:31:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:31:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:31:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:31:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:31:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:31:55,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:31:55,061 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 11:31:55,540 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:31:55,540 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-04-18 11:31:55,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:31:55 BoogieIcfgContainer [2020-04-18 11:31:55,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:31:55,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:31:55,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:31:55,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:31:55,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:31:54" (1/3) ... [2020-04-18 11:31:55,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab91014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:31:55, skipping insertion in model container [2020-04-18 11:31:55,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:31:54" (2/3) ... [2020-04-18 11:31:55,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab91014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:31:55, skipping insertion in model container [2020-04-18 11:31:55,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:31:55" (3/3) ... [2020-04-18 11:31:55,561 INFO L109 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2020-04-18 11:31:55,574 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:31:55,574 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:31:55,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:31:55,584 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:31:55,620 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,620 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,620 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,621 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,621 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,621 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,622 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,622 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,622 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,623 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,623 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,623 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,623 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,624 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,624 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,624 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,625 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,625 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,626 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,626 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,626 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,626 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,629 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,630 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,630 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,630 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,631 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,631 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,631 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,632 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,637 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,637 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,638 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,638 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,638 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,639 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,640 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,640 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,640 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,640 WARN L315 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,641 WARN L315 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:31:55,658 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-04-18 11:31:55,675 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:31:55,675 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:31:55,676 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:31:55,676 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:31:55,676 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:31:55,676 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:31:55,676 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:31:55,677 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:31:55,693 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 86 transitions, 177 flow [2020-04-18 11:31:55,695 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 86 transitions, 177 flow [2020-04-18 11:31:55,740 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2020-04-18 11:31:55,741 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:31:55,747 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 6/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2020-04-18 11:31:55,751 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 86 transitions, 177 flow [2020-04-18 11:31:55,773 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2020-04-18 11:31:55,773 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:31:55,775 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 6/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2020-04-18 11:31:55,777 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2160 [2020-04-18 11:31:55,778 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:31:58,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:31:58,057 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:31:58,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:31:58,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:31:58,093 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2372 [2020-04-18 11:31:58,093 INFO L214 etLargeBlockEncoding]: Total number of compositions: 96 [2020-04-18 11:31:58,097 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 13 transitions, 31 flow [2020-04-18 11:31:58,107 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 32 states. [2020-04-18 11:31:58,110 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-04-18 11:31:58,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 11:31:58,116 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:58,117 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-04-18 11:31:58,118 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:58,124 INFO L82 PathProgramCache]: Analyzing trace with hash 11174652, now seen corresponding path program 1 times [2020-04-18 11:31:58,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:58,132 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1069762849] [2020-04-18 11:31:58,149 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:58,161 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 11:31:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2020-04-18 11:31:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-04-18 11:31:58,163 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:58,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:58,164 INFO L82 PathProgramCache]: Analyzing trace with hash 11174652, now seen corresponding path program 2 times [2020-04-18 11:31:58,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:58,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032879254] [2020-04-18 11:31:58,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:58,329 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 11:31:58,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032879254] [2020-04-18 11:31:58,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:58,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:31:58,332 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:58,333 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:58,334 INFO L259 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-04-18 11:31:58,334 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:58,341 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:58,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:58,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:58,347 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2020-04-18 11:31:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:58,351 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-04-18 11:31:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2020-04-18 11:31:58,352 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:58,353 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1069762849] [2020-04-18 11:31:58,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:58,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:31:58,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1069762849] [2020-04-18 11:31:58,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:31:58,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:58,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:31:58,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:31:58,364 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-04-18 11:31:58,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:58,377 INFO L93 Difference]: Finished difference Result 31 states and 50 transitions. [2020-04-18 11:31:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:31:58,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-04-18 11:31:58,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:58,387 INFO L225 Difference]: With dead ends: 31 [2020-04-18 11:31:58,387 INFO L226 Difference]: Without dead ends: 13 [2020-04-18 11:31:58,389 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:31:58,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-04-18 11:31:58,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-04-18 11:31:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-04-18 11:31:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-04-18 11:31:58,423 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 4 [2020-04-18 11:31:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:58,423 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-04-18 11:31:58,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:31:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-04-18 11:31:58,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:31:58,424 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:31:58,424 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:31:58,425 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:31:58,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:58,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1422714602, now seen corresponding path program 1 times [2020-04-18 11:31:58,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:31:58,426 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [824551889] [2020-04-18 11:31:58,426 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:58,430 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 24 transitions. [2020-04-18 11:31:58,431 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-04-18 11:31:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:31:58,432 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:31:58,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:58,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1422714602, now seen corresponding path program 2 times [2020-04-18 11:31:58,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:58,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214938631] [2020-04-18 11:31:58,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:58,596 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 11:31:58,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214938631] [2020-04-18 11:31:58,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:58,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:58,598 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:58,599 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:58,602 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 12 transitions. [2020-04-18 11:31:58,602 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:58,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:31:58,677 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:31:58,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:31:58,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:31:58,678 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 9 states. [2020-04-18 11:31:58,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:58,815 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-04-18 11:31:58,815 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2020-04-18 11:31:58,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:31:58,816 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:31:58,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:31:58,817 INFO L82 PathProgramCache]: Analyzing trace with hash -786886622, now seen corresponding path program 3 times [2020-04-18 11:31:58,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:31:58,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944538246] [2020-04-18 11:31:58,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:31:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:31:58,932 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 11:31:58,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944538246] [2020-04-18 11:31:58,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:31:58,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:31:58,934 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:31:58,935 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:31:58,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:31:58,937 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:31:59,009 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:31:59,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:31:59,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:31:59,010 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand 6 states. [2020-04-18 11:31:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:59,061 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-04-18 11:31:59,061 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2020-04-18 11:31:59,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:59,062 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [824551889] [2020-04-18 11:31:59,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:31:59,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:31:59,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [824551889] [2020-04-18 11:31:59,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:31:59,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:31:59,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:31:59,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:31:59,065 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 13 states. [2020-04-18 11:31:59,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:31:59,216 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-04-18 11:31:59,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 11:31:59,217 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 8 [2020-04-18 11:31:59,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:31:59,217 INFO L225 Difference]: With dead ends: 15 [2020-04-18 11:31:59,217 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:31:59,220 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:31:59,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:31:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:31:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:31:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:31:59,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-04-18 11:31:59,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:31:59,222 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:31:59,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:31:59,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:31:59,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:31:59,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:31:59 BasicIcfg [2020-04-18 11:31:59,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:31:59,245 INFO L168 Benchmark]: Toolchain (without parser) took 5121.01 ms. Allocated memory was 142.1 MB in the beginning and 275.3 MB in the end (delta: 133.2 MB). Free memory was 103.2 MB in the beginning and 242.4 MB in the end (delta: -139.2 MB). Peak memory consumption was 112.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:31:59,247 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 142.1 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 11:31:59,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.18 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 162.8 MB in the end (delta: -61.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-04-18 11:31:59,251 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.77 ms. Allocated memory is still 203.9 MB. Free memory was 162.8 MB in the beginning and 160.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:31:59,258 INFO L168 Benchmark]: Boogie Preprocessor took 26.12 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:31:59,260 INFO L168 Benchmark]: RCFGBuilder took 560.21 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 132.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:31:59,261 INFO L168 Benchmark]: TraceAbstraction took 3688.74 ms. Allocated memory was 203.9 MB in the beginning and 275.3 MB in the end (delta: 71.3 MB). Free memory was 132.2 MB in the beginning and 242.4 MB in the end (delta: -110.1 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:31:59,270 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 142.1 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.18 ms. Allocated memory was 142.1 MB in the beginning and 203.9 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 162.8 MB in the end (delta: -61.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.77 ms. Allocated memory is still 203.9 MB. Free memory was 162.8 MB in the beginning and 160.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.12 ms. Allocated memory is still 203.9 MB. Free memory was 160.2 MB in the beginning and 158.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 560.21 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 132.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3688.74 ms. Allocated memory was 203.9 MB in the beginning and 275.3 MB in the end (delta: 71.3 MB). Free memory was 132.2 MB in the beginning and 242.4 MB in the end (delta: -110.1 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.4s, 84 ProgramPointsBefore, 16 ProgramPointsAfterwards, 86 TransitionsBefore, 13 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 1329 VarBasedMoverChecksPositive, 34 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2372 CheckedPairsTotal, 96 TotalNumberOfCompositions - PositiveResult [Line: 679]: 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 2 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 17 SDtfs, 17 SDslu, 19 SDs, 0 SdLazy, 92 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...