/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:03:33,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:03:33,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:03:33,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:03:33,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:03:33,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:03:33,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:03:33,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:03:33,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:03:33,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:03:33,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:03:33,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:03:33,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:03:33,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:03:33,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:03:33,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:03:33,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:03:33,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:03:33,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:03:33,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:03:33,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:03:33,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:03:33,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:03:33,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:03:33,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 01:03:33,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 01:03:33,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 01:03:33,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 01:03:33,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 01:03:33,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 01:03:33,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:03:33,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:03:33,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:03:33,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:03:33,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:03:33,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:03:33,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:03:33,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:03:33,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:03:33,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:03:33,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:03:33,554 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 01:03:33,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:03:33,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:03:33,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:03:33,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:03:33,597 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:03:33,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:03:33,598 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:03:33,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:03:33,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:03:33,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:03:33,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:03:33,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:03:33,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:03:33,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:03:33,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:03:33,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:03:33,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:03:33,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:03:33,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:03:33,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:03:33,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:03:33,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:03:33,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:03:33,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:03:33,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:03:33,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:03:33,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:03:33,603 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:03:33,603 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:03:33,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:03:33,604 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:03:33,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:03:33,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:03:33,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:03:33,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:03:33,930 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:03:33,930 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-10-06 01:03:33,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9417fe9fa/9bf8631b32fc44759fbb12e9e38074b4/FLAGa1898bfac [2020-10-06 01:03:34,497 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:03:34,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2020-10-06 01:03:34,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9417fe9fa/9bf8631b32fc44759fbb12e9e38074b4/FLAGa1898bfac [2020-10-06 01:03:34,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9417fe9fa/9bf8631b32fc44759fbb12e9e38074b4 [2020-10-06 01:03:34,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:03:34,799 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:03:34,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:03:34,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:03:34,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:03:34,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:03:34" (1/1) ... [2020-10-06 01:03:34,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f47a83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:34, skipping insertion in model container [2020-10-06 01:03:34,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:03:34" (1/1) ... [2020-10-06 01:03:34,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:03:34,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:03:35,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:03:35,342 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:03:35,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:03:35,523 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:03:35,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35 WrapperNode [2020-10-06 01:03:35,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:03:35,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:03:35,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:03:35,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:03:35,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:03:35,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:03:35,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:03:35,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:03:35,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... [2020-10-06 01:03:35,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:03:35,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:03:35,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:03:35,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:03:35,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:03:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:03:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:03:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:03:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:03:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:03:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:03:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:03:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:03:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:03:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:03:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:03:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:03:35,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:03:35,685 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:03:36,024 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:03:36,025 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:03:36,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:03:36 BoogieIcfgContainer [2020-10-06 01:03:36,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:03:36,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:03:36,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:03:36,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:03:36,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:03:34" (1/3) ... [2020-10-06 01:03:36,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7fc780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:03:36, skipping insertion in model container [2020-10-06 01:03:36,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:03:35" (2/3) ... [2020-10-06 01:03:36,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7fc780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:03:36, skipping insertion in model container [2020-10-06 01:03:36,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:03:36" (3/3) ... [2020-10-06 01:03:36,041 INFO L109 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-10-06 01:03:36,053 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:03:36,053 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:03:36,061 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:03:36,062 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:03:36,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,106 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,107 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,115 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,115 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,121 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,122 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,122 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,122 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,131 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:03:36,147 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:03:36,170 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:03:36,170 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:03:36,170 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:03:36,170 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:03:36,171 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:03:36,171 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:03:36,171 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:03:36,171 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:03:36,190 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:36,192 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:36,243 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:03:36,244 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:03:36,249 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 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:03:36,252 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:03:36,287 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:03:36,287 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:03:36,287 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 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:03:36,295 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 01:03:36,296 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:03:37,707 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-10-06 01:03:37,707 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-10-06 01:03:37,711 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-06 01:03:37,736 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-06 01:03:37,738 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-06 01:03:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:03:37,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:37,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:37,748 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:37,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1620259193, now seen corresponding path program 1 times [2020-10-06 01:03:37,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:37,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504688080] [2020-10-06 01:03:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:38,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504688080] [2020-10-06 01:03:38,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:38,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:03:38,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1627402698] [2020-10-06 01:03:38,029 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:38,032 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:38,046 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:03:38,046 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:38,051 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:38,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:38,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:38,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:38,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:38,069 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-06 01:03:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:38,106 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-06 01:03:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:38,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 01:03:38,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:38,123 INFO L225 Difference]: With dead ends: 290 [2020-10-06 01:03:38,123 INFO L226 Difference]: Without dead ends: 226 [2020-10-06 01:03:38,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:38,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-06 01:03:38,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-06 01:03:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-06 01:03:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-06 01:03:38,193 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-06 01:03:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:38,195 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-06 01:03:38,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-06 01:03:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 01:03:38,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:38,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:38,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:03:38,197 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:38,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:38,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1042338189, now seen corresponding path program 1 times [2020-10-06 01:03:38,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:38,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760066557] [2020-10-06 01:03:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:38,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760066557] [2020-10-06 01:03:38,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:38,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:03:38,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [256392947] [2020-10-06 01:03:38,259 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:38,260 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:38,263 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-10-06 01:03:38,263 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:38,316 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:38,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:38,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:38,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:38,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:38,319 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-06 01:03:38,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:38,328 INFO L93 Difference]: Finished difference Result 214 states and 585 transitions. [2020-10-06 01:03:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:38,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-06 01:03:38,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:38,331 INFO L225 Difference]: With dead ends: 214 [2020-10-06 01:03:38,332 INFO L226 Difference]: Without dead ends: 214 [2020-10-06 01:03:38,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:38,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-06 01:03:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-10-06 01:03:38,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-06 01:03:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 585 transitions. [2020-10-06 01:03:38,351 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 585 transitions. Word has length 9 [2020-10-06 01:03:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:38,351 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 585 transitions. [2020-10-06 01:03:38,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 585 transitions. [2020-10-06 01:03:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:03:38,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:38,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:38,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:03:38,354 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:38,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:38,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2047253273, now seen corresponding path program 1 times [2020-10-06 01:03:38,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:38,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814464380] [2020-10-06 01:03:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:38,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814464380] [2020-10-06 01:03:38,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:38,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:38,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [828642622] [2020-10-06 01:03:38,414 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:38,414 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:38,416 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-10-06 01:03:38,417 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:38,466 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:38,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:38,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:38,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:38,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:38,467 INFO L87 Difference]: Start difference. First operand 214 states and 585 transitions. Second operand 4 states. [2020-10-06 01:03:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:38,489 INFO L93 Difference]: Finished difference Result 240 states and 627 transitions. [2020-10-06 01:03:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:03:38,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-06 01:03:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:38,491 INFO L225 Difference]: With dead ends: 240 [2020-10-06 01:03:38,491 INFO L226 Difference]: Without dead ends: 144 [2020-10-06 01:03:38,492 INFO L675 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 [2020-10-06 01:03:38,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-06 01:03:38,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-06 01:03:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-06 01:03:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-06 01:03:38,500 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 10 [2020-10-06 01:03:38,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:38,501 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-06 01:03:38,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-06 01:03:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:03:38,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:38,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:38,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:03:38,503 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:38,518 INFO L82 PathProgramCache]: Analyzing trace with hash 315672505, now seen corresponding path program 1 times [2020-10-06 01:03:38,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:38,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094688089] [2020-10-06 01:03:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:38,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094688089] [2020-10-06 01:03:38,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:38,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:38,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1322564310] [2020-10-06 01:03:38,628 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:38,629 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:38,633 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-10-06 01:03:38,633 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:38,665 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,688 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,701 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,715 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,727 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,743 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,758 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:38,888 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2605#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-06 01:03:38,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:03:38,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:38,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:03:38,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:38,890 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-10-06 01:03:38,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:38,969 INFO L93 Difference]: Finished difference Result 137 states and 312 transitions. [2020-10-06 01:03:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:03:38,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-06 01:03:38,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:38,973 INFO L225 Difference]: With dead ends: 137 [2020-10-06 01:03:38,973 INFO L226 Difference]: Without dead ends: 97 [2020-10-06 01:03:38,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:03:38,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-06 01:03:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-06 01:03:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-06 01:03:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-06 01:03:38,985 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-10-06 01:03:38,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:38,985 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-06 01:03:38,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:03:38,985 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-06 01:03:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 01:03:38,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:38,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:38,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:03:38,990 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:38,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:38,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1634628682, now seen corresponding path program 1 times [2020-10-06 01:03:38,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:38,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127106359] [2020-10-06 01:03:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:39,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127106359] [2020-10-06 01:03:39,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:39,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:03:39,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [224890566] [2020-10-06 01:03:39,044 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:39,045 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:39,047 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-06 01:03:39,048 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:39,051 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:39,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:03:39,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:39,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:03:39,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:39,052 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-10-06 01:03:39,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:39,059 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-10-06 01:03:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:03:39,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-06 01:03:39,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:39,060 INFO L225 Difference]: With dead ends: 115 [2020-10-06 01:03:39,061 INFO L226 Difference]: Without dead ends: 98 [2020-10-06 01:03:39,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:03:39,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-06 01:03:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-06 01:03:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-06 01:03:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-06 01:03:39,066 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-10-06 01:03:39,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:39,066 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-06 01:03:39,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:03:39,066 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-06 01:03:39,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:03:39,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:39,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:39,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:03:39,068 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:39,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:39,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1887879687, now seen corresponding path program 1 times [2020-10-06 01:03:39,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:39,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300710117] [2020-10-06 01:03:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:39,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300710117] [2020-10-06 01:03:39,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:39,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 01:03:39,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1587539753] [2020-10-06 01:03:39,130 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:39,132 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:39,137 INFO L258 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-10-06 01:03:39,137 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:39,143 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:03:39,274 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3257#(not (= 3 ~__unbuffered_cnt~0)), 3258#(not (= ~__unbuffered_cnt~0 2)), 3259#(not (= ~__unbuffered_cnt~0 1)), 3260#(<= ~__unbuffered_cnt~0 0)] [2020-10-06 01:03:39,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-06 01:03:39,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:39,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-06 01:03:39,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-06 01:03:39,276 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 10 states. [2020-10-06 01:03:39,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:39,339 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-06 01:03:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:03:39,340 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-06 01:03:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:39,340 INFO L225 Difference]: With dead ends: 92 [2020-10-06 01:03:39,341 INFO L226 Difference]: Without dead ends: 36 [2020-10-06 01:03:39,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:03:39,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-06 01:03:39,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-06 01:03:39,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-06 01:03:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-06 01:03:39,344 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-06 01:03:39,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:39,344 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-06 01:03:39,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-06 01:03:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-06 01:03:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 01:03:39,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:03:39,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:03:39,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 01:03:39,346 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:03:39,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:03:39,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1759545272, now seen corresponding path program 1 times [2020-10-06 01:03:39,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:03:39,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873844447] [2020-10-06 01:03:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:03:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:03:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:03:39,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873844447] [2020-10-06 01:03:39,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:03:39,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:03:39,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [684030261] [2020-10-06 01:03:39,379 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:03:39,380 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:03:39,417 INFO L258 McrAutomatonBuilder]: Finished intersection with 59 states and 108 transitions. [2020-10-06 01:03:39,418 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:03:39,442 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:03:39,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:03:39,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:03:39,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:03:39,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:03:39,443 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-06 01:03:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:03:39,453 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-06 01:03:39,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:03:39,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-06 01:03:39,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:03:39,454 INFO L225 Difference]: With dead ends: 35 [2020-10-06 01:03:39,454 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:03:39,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:03:39,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:03:39,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:03:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:03:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:03:39,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-06 01:03:39,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:03:39,456 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:03:39,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:03:39,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:03:39,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:03:39,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 01:03:39,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:03:39 BasicIcfg [2020-10-06 01:03:39,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:03:39,463 INFO L168 Benchmark]: Toolchain (without parser) took 4664.04 ms. Allocated memory was 149.4 MB in the beginning and 275.3 MB in the end (delta: 125.8 MB). Free memory was 104.0 MB in the beginning and 234.3 MB in the end (delta: -130.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-06 01:03:39,464 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 149.4 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 01:03:39,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.83 ms. Allocated memory was 149.4 MB in the beginning and 206.0 MB in the end (delta: 56.6 MB). Free memory was 103.6 MB in the beginning and 164.2 MB in the end (delta: -60.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:39,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.85 ms. Allocated memory is still 206.0 MB. Free memory was 163.6 MB in the beginning and 161.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:39,467 INFO L168 Benchmark]: Boogie Preprocessor took 27.20 ms. Allocated memory is still 206.0 MB. Free memory was 161.7 MB in the beginning and 160.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:39,467 INFO L168 Benchmark]: RCFGBuilder took 419.05 ms. Allocated memory is still 206.0 MB. Free memory was 160.4 MB in the beginning and 138.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:03:39,470 INFO L168 Benchmark]: TraceAbstraction took 3432.29 ms. Allocated memory was 206.0 MB in the beginning and 275.3 MB in the end (delta: 69.2 MB). Free memory was 137.5 MB in the beginning and 234.3 MB in the end (delta: -96.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-06 01:03:39,475 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 149.4 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.83 ms. Allocated memory was 149.4 MB in the beginning and 206.0 MB in the end (delta: 56.6 MB). Free memory was 103.6 MB in the beginning and 164.2 MB in the end (delta: -60.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.85 ms. Allocated memory is still 206.0 MB. Free memory was 163.6 MB in the beginning and 161.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.20 ms. Allocated memory is still 206.0 MB. Free memory was 161.7 MB in the beginning and 160.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.05 ms. Allocated memory is still 206.0 MB. Free memory was 160.4 MB in the beginning and 138.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3432.29 ms. Allocated memory was 206.0 MB in the beginning and 275.3 MB in the end (delta: 69.2 MB). Free memory was 137.5 MB in the beginning and 234.3 MB in the end (delta: -96.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 650 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2190 CheckedPairsTotal, 58 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: 3.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 126 SDtfs, 105 SDslu, 172 SDs, 0 SdLazy, 99 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...