/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-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:43:51,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:43:51,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:43:51,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:43:51,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:43:51,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:43:51,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:43:51,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:43:51,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:43:51,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:43:51,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:43:51,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:43:51,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:43:51,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:43:51,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:43:51,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:43:51,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:43:51,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:43:51,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:43:51,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:43:51,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:43:51,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:43:51,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:43:51,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:43:51,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:43:51,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:43:51,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:43:51,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:43:51,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:43:51,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:43:51,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:43:51,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:43:51,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:43:51,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:43:51,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:43:51,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:43:51,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:43:51,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:43:51,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:43:51,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:43:51,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:43:51,825 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-McrStrategy.epf [2020-04-18 15:43:51,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:43:51,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:43:51,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:43:51,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:43:51,840 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:43:51,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:43:51,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:43:51,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:43:51,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:43:51,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:43:51,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:43:51,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:43:51,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:43:51,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:43:51,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:43:51,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:43:51,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:43:51,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:43:51,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:43:51,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:43:51,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:43:51,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:43:51,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:43:51,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:43:51,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:43:51,844 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:43:51,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:43:51,845 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:43:51,845 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:43:51,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:43:51,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:43:52,170 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:43:52,195 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:43:52,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:43:52,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:43:52,200 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:43:52,202 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-04-18 15:43:52,276 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70cfb1955/0361422c757c482ebc258e45718a1678/FLAGa0aab9d42 [2020-04-18 15:43:52,822 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:43:52,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-04-18 15:43:52,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70cfb1955/0361422c757c482ebc258e45718a1678/FLAGa0aab9d42 [2020-04-18 15:43:53,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70cfb1955/0361422c757c482ebc258e45718a1678 [2020-04-18 15:43:53,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:43:53,182 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:43:53,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:43:53,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:43:53,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:43:53,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:43:53" (1/1) ... [2020-04-18 15:43:53,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e1a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53, skipping insertion in model container [2020-04-18 15:43:53,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:43:53" (1/1) ... [2020-04-18 15:43:53,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:43:53,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:43:53,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:43:53,761 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:43:53,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:43:53,907 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:43:53,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53 WrapperNode [2020-04-18 15:43:53,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:43:53,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:43:53,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:43:53,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:43:53,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53" (1/1) ... [2020-04-18 15:43:53,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53" (1/1) ... [2020-04-18 15:43:53,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:43:53,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:43:53,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:43:53,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:43:53,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53" (1/1) ... [2020-04-18 15:43:53,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53" (1/1) ... [2020-04-18 15:43:53,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53" (1/1) ... [2020-04-18 15:43:53,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53" (1/1) ... [2020-04-18 15:43:53,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53" (1/1) ... [2020-04-18 15:43:53,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53" (1/1) ... [2020-04-18 15:43:53,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53" (1/1) ... [2020-04-18 15:43:54,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:43:54,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:43:54,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:43:54,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:43:54,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53" (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 15:43:54,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:43:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:43:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:43:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:43:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:43:54,075 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:43:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:43:54,078 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:43:54,078 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:43:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:43:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:43:54,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:43:54,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:43:54,081 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 15:43:54,457 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:43:54,457 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:43:54,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:43:54 BoogieIcfgContainer [2020-04-18 15:43:54,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:43:54,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:43:54,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:43:54,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:43:54,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:43:53" (1/3) ... [2020-04-18 15:43:54,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a23a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:43:54, skipping insertion in model container [2020-04-18 15:43:54,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:43:53" (2/3) ... [2020-04-18 15:43:54,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a23a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:43:54, skipping insertion in model container [2020-04-18 15:43:54,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:43:54" (3/3) ... [2020-04-18 15:43:54,470 INFO L109 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2020-04-18 15:43:54,480 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:43:54,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:43:54,487 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:43:54,488 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:43:54,519 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,520 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,520 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,520 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,521 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,521 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,522 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,522 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,522 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,522 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,523 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,523 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,524 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,524 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,524 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,524 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,525 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,525 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,529 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,530 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,530 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,530 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,537 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,537 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,538 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,538 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,546 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,546 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,546 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,546 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:43:54,564 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:43:54,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:43:54,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:43:54,581 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:43:54,581 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:43:54,581 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:43:54,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:43:54,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:43:54,582 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:43:54,597 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:43:54,599 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:43:54,642 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:43:54,643 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:43:54,648 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:43:54,650 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:43:54,676 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:43:54,677 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:43:54,678 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:43:54,682 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:43:54,683 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:43:56,098 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 15:43:56,225 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2732 [2020-04-18 15:43:56,226 INFO L214 etLargeBlockEncoding]: Total number of compositions: 60 [2020-04-18 15:43:56,229 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 15:43:56,253 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:43:56,256 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:43:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:43:56,264 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:43:56,265 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:43:56,266 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:43:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:56,273 INFO L82 PathProgramCache]: Analyzing trace with hash 760003701, now seen corresponding path program 1 times [2020-04-18 15:43:56,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:43:56,281 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [198591401] [2020-04-18 15:43:56,297 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:56,306 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:43:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:43:56,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:43:56,309 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:43:56,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:56,310 INFO L82 PathProgramCache]: Analyzing trace with hash 760003701, now seen corresponding path program 2 times [2020-04-18 15:43:56,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:43:56,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385151000] [2020-04-18 15:43:56,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:43:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:43:56,546 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 15:43:56,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385151000] [2020-04-18 15:43:56,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:43:56,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:43:56,550 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:43:56,551 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:56,557 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:43:56,557 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:43:56,567 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:43:56,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:43:56,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:43:56,574 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:43:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:56,578 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:43:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:43:56,579 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:43:56,579 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [198591401] [2020-04-18 15:43:56,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:43:56,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:43:56,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [198591401] [2020-04-18 15:43:56,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:43:56,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:43:56,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:43:56,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:43:56,588 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:43:56,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:56,636 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-18 15:43:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:43:56,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:43:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:43:56,658 INFO L225 Difference]: With dead ends: 290 [2020-04-18 15:43:56,659 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 15:43:56,660 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 15:43:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 15:43:56,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 15:43:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 15:43:56,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-18 15:43:56,754 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-18 15:43:56,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:43:56,755 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-18 15:43:56,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:43:56,756 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-18 15:43:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:43:56,758 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:43:56,758 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:43:56,758 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:43:56,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:56,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2069729619, now seen corresponding path program 1 times [2020-04-18 15:43:56,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:43:56,759 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [119794167] [2020-04-18 15:43:56,759 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:56,761 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 15:43:56,762 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 15:43:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:43:56,763 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:43:56,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:56,763 INFO L82 PathProgramCache]: Analyzing trace with hash 2069729619, now seen corresponding path program 2 times [2020-04-18 15:43:56,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:43:56,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225880070] [2020-04-18 15:43:56,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:43:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:43:56,875 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 15:43:56,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225880070] [2020-04-18 15:43:56,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:43:56,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:43:56,877 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:43:56,877 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:56,879 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 15:43:56,879 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:43:56,899 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:43:56,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:43:56,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:43:56,900 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-04-18 15:43:56,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:56,915 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 15:43:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 15:43:56,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:43:56,916 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [119794167] [2020-04-18 15:43:56,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:43:56,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:43:56,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [119794167] [2020-04-18 15:43:56,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:43:56,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:43:56,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:43:56,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:43:56,918 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 4 states. [2020-04-18 15:43:56,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:56,949 INFO L93 Difference]: Finished difference Result 242 states and 605 transitions. [2020-04-18 15:43:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:43:56,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:43:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:43:56,951 INFO L225 Difference]: With dead ends: 242 [2020-04-18 15:43:56,952 INFO L226 Difference]: Without dead ends: 178 [2020-04-18 15:43:56,953 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 15:43:56,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-18 15:43:56,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-04-18 15:43:56,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-18 15:43:56,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 434 transitions. [2020-04-18 15:43:56,970 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 434 transitions. Word has length 9 [2020-04-18 15:43:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:43:56,971 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 434 transitions. [2020-04-18 15:43:56,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:43:56,971 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 434 transitions. [2020-04-18 15:43:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:43:56,973 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:43:56,973 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:43:56,974 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:43:56,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:56,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1183022512, now seen corresponding path program 1 times [2020-04-18 15:43:56,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:43:56,975 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [608077203] [2020-04-18 15:43:56,976 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:56,976 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 47 transitions. [2020-04-18 15:43:56,978 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-04-18 15:43:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:43:56,982 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:43:56,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:56,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1183022512, now seen corresponding path program 2 times [2020-04-18 15:43:56,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:43:56,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189720613] [2020-04-18 15:43:56,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:43:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:43:57,100 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 15:43:57,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189720613] [2020-04-18 15:43:57,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:43:57,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:43:57,101 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:43:57,102 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:57,104 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 35 transitions. [2020-04-18 15:43:57,104 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:43:57,160 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:43:57,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:43:57,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:43:57,161 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2020-04-18 15:43:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:57,190 INFO L93 Difference]: Finished difference Result 30 states and 47 transitions. [2020-04-18 15:43:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 47 transitions. [2020-04-18 15:43:57,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:43:57,191 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [608077203] [2020-04-18 15:43:57,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:43:57,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:43:57,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [608077203] [2020-04-18 15:43:57,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:43:57,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:43:57,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:43:57,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:43:57,193 INFO L87 Difference]: Start difference. First operand 178 states and 434 transitions. Second operand 6 states. [2020-04-18 15:43:57,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:57,249 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-04-18 15:43:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:43:57,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 15:43:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:43:57,254 INFO L225 Difference]: With dead ends: 163 [2020-04-18 15:43:57,254 INFO L226 Difference]: Without dead ends: 126 [2020-04-18 15:43:57,254 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:43:57,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-04-18 15:43:57,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-04-18 15:43:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-04-18 15:43:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-04-18 15:43:57,266 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-04-18 15:43:57,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:43:57,266 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-04-18 15:43:57,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:43:57,267 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-04-18 15:43:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:43:57,267 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:43:57,268 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:43:57,268 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:43:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:57,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1548024821, now seen corresponding path program 1 times [2020-04-18 15:43:57,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:43:57,269 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1297741666] [2020-04-18 15:43:57,269 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:57,271 INFO L259 McrAutomatonBuilder]: Finished intersection with 90 states and 200 transitions. [2020-04-18 15:43:57,272 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-04-18 15:43:57,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:43:57,273 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:43:57,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:57,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1548024821, now seen corresponding path program 2 times [2020-04-18 15:43:57,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:43:57,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232596024] [2020-04-18 15:43:57,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:43:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:43:57,336 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 15:43:57,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232596024] [2020-04-18 15:43:57,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:43:57,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:43:57,337 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:43:57,338 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:57,342 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-04-18 15:43:57,343 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:43:57,398 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:43:57,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:43:57,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:43:57,399 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 7 states. [2020-04-18 15:43:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:57,483 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-04-18 15:43:57,484 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 200 transitions. [2020-04-18 15:43:57,484 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:43:57,485 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1297741666] [2020-04-18 15:43:57,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:43:57,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:43:57,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1297741666] [2020-04-18 15:43:57,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:43:57,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:43:57,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:43:57,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:43:57,488 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand 7 states. [2020-04-18 15:43:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:57,552 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-04-18 15:43:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:43:57,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-04-18 15:43:57,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:43:57,554 INFO L225 Difference]: With dead ends: 118 [2020-04-18 15:43:57,554 INFO L226 Difference]: Without dead ends: 108 [2020-04-18 15:43:57,554 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:43:57,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-04-18 15:43:57,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-04-18 15:43:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-04-18 15:43:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-04-18 15:43:57,562 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-04-18 15:43:57,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:43:57,562 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-04-18 15:43:57,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:43:57,563 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-04-18 15:43:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:43:57,564 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:43:57,564 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:43:57,564 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:43:57,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:57,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2137678742, now seen corresponding path program 1 times [2020-04-18 15:43:57,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:43:57,566 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [745425583] [2020-04-18 15:43:57,567 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:57,574 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:43:57,576 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:43:57,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:43:57,578 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:43:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:57,578 INFO L82 PathProgramCache]: Analyzing trace with hash -2143403264, now seen corresponding path program 2 times [2020-04-18 15:43:57,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:43:57,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54667495] [2020-04-18 15:43:57,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:43:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:43:57,680 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 15:43:57,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54667495] [2020-04-18 15:43:57,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:43:57,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:43:57,685 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:43:57,686 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:57,694 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-04-18 15:43:57,694 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:43:57,742 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:43:57,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:43:57,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:43:57,743 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 7 states. [2020-04-18 15:43:57,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:57,863 INFO L93 Difference]: Finished difference Result 236 states and 657 transitions. [2020-04-18 15:43:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 657 transitions. [2020-04-18 15:43:57,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:43:57,865 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:43:57,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:57,865 INFO L82 PathProgramCache]: Analyzing trace with hash 2137678742, now seen corresponding path program 3 times [2020-04-18 15:43:57,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:43:57,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125344309] [2020-04-18 15:43:57,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:43:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:43:57,892 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 15:43:57,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125344309] [2020-04-18 15:43:57,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:43:57,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:43:57,893 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:43:57,895 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:57,900 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-04-18 15:43:57,900 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:43:57,910 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:43:57,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:43:57,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:43:57,911 INFO L87 Difference]: Start difference. First operand 236 states and 657 transitions. Second operand 3 states. [2020-04-18 15:43:57,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:57,920 INFO L93 Difference]: Finished difference Result 342 states and 908 transitions. [2020-04-18 15:43:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 908 transitions. [2020-04-18 15:43:57,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:43:57,922 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:43:57,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:57,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1164645812, now seen corresponding path program 4 times [2020-04-18 15:43:57,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:43:57,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225098705] [2020-04-18 15:43:57,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:43:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:43:57,954 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 15:43:57,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225098705] [2020-04-18 15:43:57,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:43:57,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:43:57,955 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:43:57,957 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:57,964 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 105 transitions. [2020-04-18 15:43:57,964 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:43:57,984 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:43:57,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:43:57,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:43:57,985 INFO L87 Difference]: Start difference. First operand 342 states and 908 transitions. Second operand 4 states. [2020-04-18 15:43:58,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:58,007 INFO L93 Difference]: Finished difference Result 526 states and 1312 transitions. [2020-04-18 15:43:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1312 transitions. [2020-04-18 15:43:58,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:43:58,009 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:43:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:43:58,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2098338434, now seen corresponding path program 5 times [2020-04-18 15:43:58,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:43:58,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16983356] [2020-04-18 15:43:58,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:43:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:43:58,040 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 15:43:58,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16983356] [2020-04-18 15:43:58,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:43:58,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:43:58,042 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:43:58,043 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:43:58,049 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 59 transitions. [2020-04-18 15:43:58,049 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:43:58,088 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:43:58,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:43:58,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:43:58,089 INFO L87 Difference]: Start difference. First operand 526 states and 1312 transitions. Second operand 4 states. [2020-04-18 15:43:58,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:58,115 INFO L93 Difference]: Finished difference Result 836 states and 1935 transitions. [2020-04-18 15:43:58,115 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1935 transitions. [2020-04-18 15:43:58,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:43:58,118 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [745425583] [2020-04-18 15:43:58,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:43:58,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:43:58,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [745425583] [2020-04-18 15:43:58,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 15:43:58,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:43:58,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 15:43:58,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:43:58,120 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 12 states. [2020-04-18 15:43:59,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:43:59,116 INFO L93 Difference]: Finished difference Result 233 states and 471 transitions. [2020-04-18 15:43:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-04-18 15:43:59,116 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-04-18 15:43:59,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:43:59,117 INFO L225 Difference]: With dead ends: 233 [2020-04-18 15:43:59,117 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:43:59,118 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=774, Invalid=2766, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 15:43:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:43:59,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:43:59,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:43:59,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:43:59,119 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:43:59,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:43:59,119 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:43:59,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 15:43:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:43:59,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:43:59,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:43:59 BasicIcfg [2020-04-18 15:43:59,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:43:59,126 INFO L168 Benchmark]: Toolchain (without parser) took 5958.97 ms. Allocated memory was 146.3 MB in the beginning and 276.8 MB in the end (delta: 130.5 MB). Free memory was 102.1 MB in the beginning and 116.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:43:59,126 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:43:59,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.02 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 158.5 MB in the end (delta: -58.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:43:59,128 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.51 ms. Allocated memory is still 203.9 MB. Free memory was 158.5 MB in the beginning and 156.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:43:59,129 INFO L168 Benchmark]: Boogie Preprocessor took 32.14 ms. Allocated memory is still 203.9 MB. Free memory was 156.6 MB in the beginning and 154.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:43:59,129 INFO L168 Benchmark]: RCFGBuilder took 460.68 ms. Allocated memory is still 203.9 MB. Free memory was 154.7 MB in the beginning and 133.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:43:59,130 INFO L168 Benchmark]: TraceAbstraction took 4661.00 ms. Allocated memory was 203.9 MB in the beginning and 276.8 MB in the end (delta: 72.9 MB). Free memory was 132.4 MB in the beginning and 116.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 88.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:43:59,134 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory is still 122.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.02 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 158.5 MB in the end (delta: -58.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.51 ms. Allocated memory is still 203.9 MB. Free memory was 158.5 MB in the beginning and 156.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.14 ms. Allocated memory is still 203.9 MB. Free memory was 156.6 MB in the beginning and 154.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.68 ms. Allocated memory is still 203.9 MB. Free memory was 154.7 MB in the beginning and 133.3 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4661.00 ms. Allocated memory was 203.9 MB in the beginning and 276.8 MB in the end (delta: 72.9 MB). Free memory was 132.4 MB in the beginning and 116.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 88.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 665 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2732 CheckedPairsTotal, 60 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 112 SDtfs, 195 SDslu, 341 SDs, 0 SdLazy, 395 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 5 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...