/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/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 14:57:59,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 14:57:59,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 14:57:59,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 14:57:59,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 14:57:59,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 14:57:59,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 14:57:59,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 14:57:59,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 14:57:59,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 14:57:59,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 14:57:59,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 14:57:59,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 14:57:59,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 14:57:59,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 14:57:59,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 14:57:59,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 14:57:59,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 14:57:59,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 14:57:59,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 14:57:59,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 14:57:59,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 14:57:59,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 14:57:59,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 14:57:59,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 14:57:59,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 14:57:59,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 14:57:59,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 14:57:59,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 14:57:59,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 14:57:59,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 14:57:59,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 14:57:59,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 14:57:59,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 14:57:59,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 14:57:59,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 14:57:59,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 14:57:59,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 14:57:59,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 14:57:59,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 14:57:59,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 14:57:59,558 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 14:57:59,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 14:57:59,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 14:57:59,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 14:57:59,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 14:57:59,575 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 14:57:59,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 14:57:59,575 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 14:57:59,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 14:57:59,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 14:57:59,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 14:57:59,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 14:57:59,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 14:57:59,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 14:57:59,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 14:57:59,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 14:57:59,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 14:57:59,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 14:57:59,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 14:57:59,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 14:57:59,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 14:57:59,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 14:57:59,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 14:57:59,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 14:57:59,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 14:57:59,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 14:57:59,579 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 14:57:59,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 14:57:59,580 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 14:57:59,580 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 14:57:59,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 14:57:59,580 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 14:57:59,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 14:57:59,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 14:57:59,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 14:57:59,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 14:57:59,891 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 14:57:59,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-04-18 14:57:59,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14e2e9af/8ac7a0bfb98c464b9ad234e7330d8ad5/FLAG6420ba7d2 [2020-04-18 14:58:00,501 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 14:58:00,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-04-18 14:58:00,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14e2e9af/8ac7a0bfb98c464b9ad234e7330d8ad5/FLAG6420ba7d2 [2020-04-18 14:58:00,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14e2e9af/8ac7a0bfb98c464b9ad234e7330d8ad5 [2020-04-18 14:58:00,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 14:58:00,816 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 14:58:00,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 14:58:00,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 14:58:00,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 14:58:00,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:58:00" (1/1) ... [2020-04-18 14:58:00,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694972d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:00, skipping insertion in model container [2020-04-18 14:58:00,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:58:00" (1/1) ... [2020-04-18 14:58:00,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 14:58:00,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 14:58:01,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 14:58:01,376 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 14:58:01,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 14:58:01,513 INFO L208 MainTranslator]: Completed translation [2020-04-18 14:58:01,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01 WrapperNode [2020-04-18 14:58:01,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 14:58:01,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 14:58:01,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 14:58:01,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 14:58:01,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01" (1/1) ... [2020-04-18 14:58:01,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01" (1/1) ... [2020-04-18 14:58:01,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 14:58:01,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 14:58:01,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 14:58:01,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 14:58:01,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01" (1/1) ... [2020-04-18 14:58:01,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01" (1/1) ... [2020-04-18 14:58:01,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01" (1/1) ... [2020-04-18 14:58:01,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01" (1/1) ... [2020-04-18 14:58:01,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01" (1/1) ... [2020-04-18 14:58:01,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01" (1/1) ... [2020-04-18 14:58:01,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01" (1/1) ... [2020-04-18 14:58:01,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 14:58:01,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 14:58:01,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 14:58:01,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 14:58:01,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01" (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 14:58:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 14:58:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 14:58:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 14:58:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 14:58:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 14:58:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 14:58:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 14:58:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 14:58:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 14:58:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 14:58:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 14:58:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 14:58:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 14:58:01,661 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 14:58:02,047 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 14:58:02,047 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 14:58:02,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:58:02 BoogieIcfgContainer [2020-04-18 14:58:02,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 14:58:02,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 14:58:02,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 14:58:02,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 14:58:02,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:58:00" (1/3) ... [2020-04-18 14:58:02,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65589843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:58:02, skipping insertion in model container [2020-04-18 14:58:02,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:58:01" (2/3) ... [2020-04-18 14:58:02,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65589843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:58:02, skipping insertion in model container [2020-04-18 14:58:02,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:58:02" (3/3) ... [2020-04-18 14:58:02,060 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-04-18 14:58:02,070 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 14:58:02,070 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 14:58:02,077 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 14:58:02,078 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 14:58:02,106 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,107 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,107 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,107 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,108 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,108 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,109 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,109 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,110 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,110 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,111 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,111 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,112 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,113 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,113 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,113 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,114 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,114 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,119 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,119 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,119 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,120 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,136 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,136 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,137 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,137 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,140 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,141 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,141 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,141 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 14:58:02,167 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 14:58:02,183 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 14:58:02,183 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 14:58:02,183 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 14:58:02,184 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 14:58:02,184 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 14:58:02,184 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 14:58:02,184 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 14:58:02,184 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 14:58:02,202 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 14:58:02,204 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 14:58:02,261 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 14:58:02,261 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 14:58:02,266 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 14:58:02,269 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 14:58:02,295 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 14:58:02,296 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 14:58:02,297 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 14:58:02,301 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 14:58:02,302 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 14:58:03,668 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 14:58:03,863 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-04-18 14:58:03,863 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 14:58:03,867 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 14:58:03,911 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 14:58:03,914 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 14:58:03,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 14:58:03,933 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:58:03,935 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:58:03,935 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:58:03,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:03,945 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-04-18 14:58:03,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:58:03,956 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [964993203] [2020-04-18 14:58:03,973 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:03,987 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 14:58:03,989 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 14:58:03,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 14:58:03,991 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:58:03,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:03,992 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 2 times [2020-04-18 14:58:03,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:03,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22201184] [2020-04-18 14:58:03,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:04,269 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 14:58:04,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22201184] [2020-04-18 14:58:04,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:04,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 14:58:04,272 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:04,272 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:04,275 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 14:58:04,275 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:04,290 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:58:04,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:04,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:58:04,296 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 14:58:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:04,300 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 14:58:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 14:58:04,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:58:04,301 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [964993203] [2020-04-18 14:58:04,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:58:04,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 14:58:04,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [964993203] [2020-04-18 14:58:04,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 14:58:04,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:58:04,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:04,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:58:04,308 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 14:58:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:04,357 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 14:58:04,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 14:58:04,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 14:58:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:58:04,395 INFO L225 Difference]: With dead ends: 266 [2020-04-18 14:58:04,395 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 14:58:04,397 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 14:58:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 14:58:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 14:58:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 14:58:04,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 14:58:04,473 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 14:58:04,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:58:04,474 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 14:58:04,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 14:58:04,475 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 14:58:04,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:58:04,477 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:58:04,477 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:58:04,477 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:58:04,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:04,478 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 1 times [2020-04-18 14:58:04,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:58:04,478 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1949841105] [2020-04-18 14:58:04,479 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:04,480 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 14:58:04,480 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-04-18 14:58:04,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:58:04,481 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:58:04,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:04,481 INFO L82 PathProgramCache]: Analyzing trace with hash 42723214, now seen corresponding path program 2 times [2020-04-18 14:58:04,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:04,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140951898] [2020-04-18 14:58:04,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:04,556 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 14:58:04,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140951898] [2020-04-18 14:58:04,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:04,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:04,558 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:04,558 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:04,561 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 14:58:04,561 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:04,570 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:58:04,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:04,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:58:04,571 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-04-18 14:58:04,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:04,574 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-04-18 14:58:04,575 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 14:58:04,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 14:58:04,575 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:58:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:04,576 INFO L82 PathProgramCache]: Analyzing trace with hash 42721384, now seen corresponding path program 3 times [2020-04-18 14:58:04,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:04,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084825397] [2020-04-18 14:58:04,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:04,660 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 14:58:04,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084825397] [2020-04-18 14:58:04,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:04,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:04,662 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:04,663 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:04,664 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 14:58:04,664 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:04,674 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:58:04,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:58:04,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:58:04,675 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-04-18 14:58:04,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:04,689 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-04-18 14:58:04,689 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-04-18 14:58:04,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:58:04,690 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1949841105] [2020-04-18 14:58:04,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:58:04,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:58:04,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1949841105] [2020-04-18 14:58:04,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 14:58:04,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:58:04,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:58:04,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:58:04,693 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 14:58:04,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:04,714 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-04-18 14:58:04,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 14:58:04,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 14:58:04,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:58:04,717 INFO L225 Difference]: With dead ends: 254 [2020-04-18 14:58:04,717 INFO L226 Difference]: Without dead ends: 190 [2020-04-18 14:58:04,718 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 14:58:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-04-18 14:58:04,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-04-18 14:58:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-04-18 14:58:04,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-04-18 14:58:04,745 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-04-18 14:58:04,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:58:04,745 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-04-18 14:58:04,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 14:58:04,745 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-04-18 14:58:04,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:58:04,747 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:58:04,747 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:58:04,747 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:58:04,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:04,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1703756569, now seen corresponding path program 1 times [2020-04-18 14:58:04,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:58:04,748 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1404033723] [2020-04-18 14:58:04,749 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:04,750 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 14:58:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 14:58:04,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:58:04,751 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:58:04,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:04,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1703758399, now seen corresponding path program 2 times [2020-04-18 14:58:04,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:04,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459608743] [2020-04-18 14:58:04,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:04,797 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 14:58:04,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459608743] [2020-04-18 14:58:04,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:04,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:04,799 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:04,800 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:04,802 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 14:58:04,802 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:04,805 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:58:04,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:04,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:58:04,808 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 14:58:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:04,812 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2020-04-18 14:58:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2020-04-18 14:58:04,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:58:04,813 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:58:04,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:04,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1703756569, now seen corresponding path program 3 times [2020-04-18 14:58:04,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:04,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337224818] [2020-04-18 14:58:04,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:04,897 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 14:58:04,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337224818] [2020-04-18 14:58:04,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:04,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:58:04,900 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:04,901 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:04,903 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 14:58:04,904 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:04,914 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:58:04,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:58:04,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:58:04,915 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand 4 states. [2020-04-18 14:58:04,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:04,941 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 14:58:04,941 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 14:58:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 14:58:04,942 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:58:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:04,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1324362317, now seen corresponding path program 4 times [2020-04-18 14:58:04,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:04,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704836409] [2020-04-18 14:58:04,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:04,988 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 14:58:04,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704836409] [2020-04-18 14:58:04,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:04,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:04,989 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:04,990 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:04,992 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-04-18 14:58:04,992 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:05,008 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:58:05,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:58:05,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:58:05,009 INFO L87 Difference]: Start difference. First operand 33 states and 50 transitions. Second operand 4 states. [2020-04-18 14:58:05,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:05,025 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2020-04-18 14:58:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 50 transitions. [2020-04-18 14:58:05,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:58:05,026 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1404033723] [2020-04-18 14:58:05,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:58:05,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:58:05,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1404033723] [2020-04-18 14:58:05,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 14:58:05,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:58:05,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:58:05,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 14:58:05,028 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 6 states. [2020-04-18 14:58:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:05,080 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-04-18 14:58:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 14:58:05,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-04-18 14:58:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:58:05,082 INFO L225 Difference]: With dead ends: 286 [2020-04-18 14:58:05,082 INFO L226 Difference]: Without dead ends: 178 [2020-04-18 14:58:05,083 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 14:58:05,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-18 14:58:05,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-04-18 14:58:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-04-18 14:58:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-04-18 14:58:05,111 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-04-18 14:58:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:58:05,111 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-04-18 14:58:05,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 14:58:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 14:58:05,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:58:05,113 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:58:05,116 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:58:05,116 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:58:05,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:05,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-04-18 14:58:05,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:58:05,117 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1096699173] [2020-04-18 14:58:05,118 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:05,119 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 68 transitions. [2020-04-18 14:58:05,119 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 14:58:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:58:05,120 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:58:05,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:05,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1787777494, now seen corresponding path program 2 times [2020-04-18 14:58:05,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:05,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433850969] [2020-04-18 14:58:05,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:05,164 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 14:58:05,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433850969] [2020-04-18 14:58:05,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:05,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:05,165 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:05,166 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:05,168 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 14:58:05,169 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:05,173 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:58:05,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:05,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:58:05,174 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-04-18 14:58:05,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:05,176 INFO L93 Difference]: Finished difference Result 40 states and 70 transitions. [2020-04-18 14:58:05,177 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 70 transitions. [2020-04-18 14:58:05,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:58:05,177 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:58:05,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:05,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 3 times [2020-04-18 14:58:05,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:05,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536846693] [2020-04-18 14:58:05,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:05,236 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 14:58:05,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536846693] [2020-04-18 14:58:05,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:05,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:05,237 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:05,238 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:05,241 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 14:58:05,243 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:05,282 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:58:05,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:05,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:58:05,283 INFO L87 Difference]: Start difference. First operand 40 states and 70 transitions. Second operand 3 states. [2020-04-18 14:58:05,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:05,294 INFO L93 Difference]: Finished difference Result 44 states and 72 transitions. [2020-04-18 14:58:05,294 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2020-04-18 14:58:05,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 14:58:05,295 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:58:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:05,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1243291666, now seen corresponding path program 4 times [2020-04-18 14:58:05,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:05,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540581677] [2020-04-18 14:58:05,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:05,351 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 14:58:05,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540581677] [2020-04-18 14:58:05,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:05,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:58:05,352 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:05,353 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:05,357 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 32 transitions. [2020-04-18 14:58:05,357 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:05,368 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:58:05,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:58:05,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 14:58:05,370 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand 4 states. [2020-04-18 14:58:05,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:05,394 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2020-04-18 14:58:05,394 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 74 transitions. [2020-04-18 14:58:05,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:58:05,395 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1096699173] [2020-04-18 14:58:05,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:58:05,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 14:58:05,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1096699173] [2020-04-18 14:58:05,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 14:58:05,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:58:05,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 14:58:05,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:58:05,398 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 5 states. [2020-04-18 14:58:05,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:05,430 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-04-18 14:58:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 14:58:05,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 14:58:05,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:58:05,432 INFO L225 Difference]: With dead ends: 174 [2020-04-18 14:58:05,432 INFO L226 Difference]: Without dead ends: 72 [2020-04-18 14:58:05,432 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 14:58:05,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-18 14:58:05,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-18 14:58:05,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-18 14:58:05,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-04-18 14:58:05,440 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-04-18 14:58:05,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:58:05,440 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-04-18 14:58:05,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 14:58:05,440 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-04-18 14:58:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:58:05,441 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:58:05,441 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:58:05,441 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:58:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:05,442 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 1 times [2020-04-18 14:58:05,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:58:05,442 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1256912532] [2020-04-18 14:58:05,443 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:05,444 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 169 transitions. [2020-04-18 14:58:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-04-18 14:58:05,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:58:05,447 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:58:05,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:05,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1034198235, now seen corresponding path program 2 times [2020-04-18 14:58:05,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:05,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265351813] [2020-04-18 14:58:05,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:05,490 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 14:58:05,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265351813] [2020-04-18 14:58:05,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:05,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:05,492 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:05,493 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:05,497 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 57 transitions. [2020-04-18 14:58:05,498 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:05,502 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:58:05,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:05,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:58:05,502 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-04-18 14:58:05,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:05,506 INFO L93 Difference]: Finished difference Result 78 states and 176 transitions. [2020-04-18 14:58:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 176 transitions. [2020-04-18 14:58:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:58:05,507 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:58:05,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:05,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1034166645, now seen corresponding path program 3 times [2020-04-18 14:58:05,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:05,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026035147] [2020-04-18 14:58:05,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:05,549 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 14:58:05,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026035147] [2020-04-18 14:58:05,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:05,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:05,550 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:05,551 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:05,555 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 65 transitions. [2020-04-18 14:58:05,555 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:05,561 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:58:05,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:05,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:58:05,561 INFO L87 Difference]: Start difference. First operand 78 states and 176 transitions. Second operand 3 states. [2020-04-18 14:58:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:05,570 INFO L93 Difference]: Finished difference Result 98 states and 198 transitions. [2020-04-18 14:58:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 198 transitions. [2020-04-18 14:58:05,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:58:05,571 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:58:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:05,572 INFO L82 PathProgramCache]: Analyzing trace with hash -229729661, now seen corresponding path program 4 times [2020-04-18 14:58:05,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:05,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964632292] [2020-04-18 14:58:05,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:05,614 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 14:58:05,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964632292] [2020-04-18 14:58:05,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:05,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:58:05,616 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:05,620 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:05,623 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 75 transitions. [2020-04-18 14:58:05,624 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:05,637 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:58:05,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:58:05,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:58:05,638 INFO L87 Difference]: Start difference. First operand 98 states and 198 transitions. Second operand 4 states. [2020-04-18 14:58:05,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:05,664 INFO L93 Difference]: Finished difference Result 114 states and 213 transitions. [2020-04-18 14:58:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 213 transitions. [2020-04-18 14:58:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 14:58:05,665 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:58:05,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:05,666 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 5 times [2020-04-18 14:58:05,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:05,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444949395] [2020-04-18 14:58:05,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 14:58:05,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444949395] [2020-04-18 14:58:05,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:05,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:05,719 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:05,721 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:05,724 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-04-18 14:58:05,724 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:05,748 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:58:05,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:58:05,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 14:58:05,749 INFO L87 Difference]: Start difference. First operand 114 states and 213 transitions. Second operand 4 states. [2020-04-18 14:58:05,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:05,761 INFO L93 Difference]: Finished difference Result 114 states and 213 transitions. [2020-04-18 14:58:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 213 transitions. [2020-04-18 14:58:05,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:58:05,763 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1256912532] [2020-04-18 14:58:05,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:58:05,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 14:58:05,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1256912532] [2020-04-18 14:58:05,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 14:58:05,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:58:05,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 14:58:05,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 14:58:05,764 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 8 states. [2020-04-18 14:58:06,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:06,003 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-04-18 14:58:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 14:58:06,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 14:58:06,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:58:06,004 INFO L225 Difference]: With dead ends: 85 [2020-04-18 14:58:06,004 INFO L226 Difference]: Without dead ends: 61 [2020-04-18 14:58:06,005 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2020-04-18 14:58:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-18 14:58:06,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-18 14:58:06,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-18 14:58:06,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-04-18 14:58:06,009 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-04-18 14:58:06,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:58:06,009 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-04-18 14:58:06,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 14:58:06,010 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-04-18 14:58:06,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:58:06,010 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:58:06,010 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:58:06,011 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:58:06,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:06,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-04-18 14:58:06,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:58:06,012 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [368091048] [2020-04-18 14:58:06,012 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:06,014 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 230 transitions. [2020-04-18 14:58:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 14:58:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:58:06,016 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:58:06,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:06,016 INFO L82 PathProgramCache]: Analyzing trace with hash 246315656, now seen corresponding path program 2 times [2020-04-18 14:58:06,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:06,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438729996] [2020-04-18 14:58:06,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:06,044 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 14:58:06,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438729996] [2020-04-18 14:58:06,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:06,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:06,045 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:06,046 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:06,050 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 57 transitions. [2020-04-18 14:58:06,050 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:06,054 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:58:06,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:06,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:58:06,055 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2020-04-18 14:58:06,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:06,058 INFO L93 Difference]: Finished difference Result 102 states and 240 transitions. [2020-04-18 14:58:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 240 transitions. [2020-04-18 14:58:06,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:58:06,059 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:58:06,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:06,059 INFO L82 PathProgramCache]: Analyzing trace with hash 246284066, now seen corresponding path program 3 times [2020-04-18 14:58:06,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:06,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587363174] [2020-04-18 14:58:06,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:06,085 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 14:58:06,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587363174] [2020-04-18 14:58:06,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:06,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:06,086 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:06,087 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:06,092 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 73 transitions. [2020-04-18 14:58:06,092 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:06,100 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:58:06,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:06,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:58:06,100 INFO L87 Difference]: Start difference. First operand 102 states and 240 transitions. Second operand 3 states. [2020-04-18 14:58:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:06,108 INFO L93 Difference]: Finished difference Result 142 states and 304 transitions. [2020-04-18 14:58:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 304 transitions. [2020-04-18 14:58:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:58:06,109 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:58:06,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:06,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1468315298, now seen corresponding path program 4 times [2020-04-18 14:58:06,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:06,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708545186] [2020-04-18 14:58:06,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:06,155 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 14:58:06,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708545186] [2020-04-18 14:58:06,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:06,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:58:06,157 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:06,158 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:06,162 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 84 transitions. [2020-04-18 14:58:06,163 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:06,178 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:58:06,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:58:06,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:58:06,179 INFO L87 Difference]: Start difference. First operand 142 states and 304 transitions. Second operand 4 states. [2020-04-18 14:58:06,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:06,199 INFO L93 Difference]: Finished difference Result 168 states and 334 transitions. [2020-04-18 14:58:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 334 transitions. [2020-04-18 14:58:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 14:58:06,200 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:58:06,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:06,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 5 times [2020-04-18 14:58:06,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:06,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970070245] [2020-04-18 14:58:06,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:06,253 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 14:58:06,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970070245] [2020-04-18 14:58:06,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:06,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:58:06,254 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:06,255 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:06,258 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 55 transitions. [2020-04-18 14:58:06,258 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:06,287 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:58:06,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 14:58:06,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-04-18 14:58:06,288 INFO L87 Difference]: Start difference. First operand 168 states and 334 transitions. Second operand 5 states. [2020-04-18 14:58:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:06,319 INFO L93 Difference]: Finished difference Result 168 states and 334 transitions. [2020-04-18 14:58:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 334 transitions. [2020-04-18 14:58:06,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:58:06,320 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [368091048] [2020-04-18 14:58:06,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:58:06,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 14:58:06,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [368091048] [2020-04-18 14:58:06,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 14:58:06,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:58:06,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 14:58:06,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 14:58:06,322 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 9 states. [2020-04-18 14:58:06,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:06,539 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-04-18 14:58:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 14:58:06,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 14:58:06,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:58:06,540 INFO L225 Difference]: With dead ends: 62 [2020-04-18 14:58:06,540 INFO L226 Difference]: Without dead ends: 47 [2020-04-18 14:58:06,541 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-04-18 14:58:06,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-04-18 14:58:06,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-04-18 14:58:06,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-04-18 14:58:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-04-18 14:58:06,543 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-04-18 14:58:06,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:58:06,544 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-04-18 14:58:06,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 14:58:06,544 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-18 14:58:06,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:58:06,545 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:58:06,545 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 14:58:06,545 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:58:06,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:06,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-04-18 14:58:06,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:58:06,546 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1481186487] [2020-04-18 14:58:06,546 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:06,548 INFO L259 McrAutomatonBuilder]: Finished intersection with 118 states and 300 transitions. [2020-04-18 14:58:06,549 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-04-18 14:58:06,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:58:06,550 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:58:06,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:06,551 INFO L82 PathProgramCache]: Analyzing trace with hash -954149052, now seen corresponding path program 2 times [2020-04-18 14:58:06,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:06,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618848188] [2020-04-18 14:58:06,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:06,579 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 14:58:06,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618848188] [2020-04-18 14:58:06,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:06,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:06,580 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:06,584 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:06,589 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 60 transitions. [2020-04-18 14:58:06,589 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:06,596 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:58:06,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:06,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:58:06,597 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-04-18 14:58:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:06,605 INFO L93 Difference]: Finished difference Result 134 states and 328 transitions. [2020-04-18 14:58:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 328 transitions. [2020-04-18 14:58:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:58:06,606 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:58:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:06,606 INFO L82 PathProgramCache]: Analyzing trace with hash -955128342, now seen corresponding path program 3 times [2020-04-18 14:58:06,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:06,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76473839] [2020-04-18 14:58:06,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:06,635 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 14:58:06,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76473839] [2020-04-18 14:58:06,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:06,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:58:06,636 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:06,637 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:06,642 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 80 transitions. [2020-04-18 14:58:06,642 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:06,648 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:58:06,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:06,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:58:06,649 INFO L87 Difference]: Start difference. First operand 134 states and 328 transitions. Second operand 3 states. [2020-04-18 14:58:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:06,659 INFO L93 Difference]: Finished difference Result 190 states and 424 transitions. [2020-04-18 14:58:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 424 transitions. [2020-04-18 14:58:06,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:58:06,660 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:58:06,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:06,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1726865814, now seen corresponding path program 4 times [2020-04-18 14:58:06,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:06,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969353383] [2020-04-18 14:58:06,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:06,713 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 14:58:06,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969353383] [2020-04-18 14:58:06,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:06,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:58:06,714 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:06,715 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:06,720 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 87 transitions. [2020-04-18 14:58:06,721 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:06,738 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:58:06,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:58:06,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:58:06,740 INFO L87 Difference]: Start difference. First operand 190 states and 424 transitions. Second operand 4 states. [2020-04-18 14:58:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:06,765 INFO L93 Difference]: Finished difference Result 242 states and 510 transitions. [2020-04-18 14:58:06,765 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 510 transitions. [2020-04-18 14:58:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:58:06,767 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:58:06,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:06,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1553257578, now seen corresponding path program 5 times [2020-04-18 14:58:06,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:06,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822331927] [2020-04-18 14:58:06,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:06,849 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 14:58:06,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822331927] [2020-04-18 14:58:06,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:06,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:58:06,850 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:06,852 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:06,856 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 60 transitions. [2020-04-18 14:58:06,856 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:06,893 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:58:06,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 14:58:06,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-04-18 14:58:06,894 INFO L87 Difference]: Start difference. First operand 242 states and 510 transitions. Second operand 5 states. [2020-04-18 14:58:06,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:06,949 INFO L93 Difference]: Finished difference Result 252 states and 517 transitions. [2020-04-18 14:58:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 517 transitions. [2020-04-18 14:58:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 14:58:06,950 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 14:58:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:06,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 6 times [2020-04-18 14:58:06,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:06,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891776130] [2020-04-18 14:58:06,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:07,011 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 14:58:07,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891776130] [2020-04-18 14:58:07,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:07,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:58:07,013 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:07,014 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:07,019 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 54 transitions. [2020-04-18 14:58:07,019 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:07,036 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:58:07,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:58:07,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-04-18 14:58:07,037 INFO L87 Difference]: Start difference. First operand 252 states and 517 transitions. Second operand 6 states. [2020-04-18 14:58:07,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:07,085 INFO L93 Difference]: Finished difference Result 252 states and 517 transitions. [2020-04-18 14:58:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 517 transitions. [2020-04-18 14:58:07,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:58:07,087 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1481186487] [2020-04-18 14:58:07,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:58:07,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 14:58:07,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1481186487] [2020-04-18 14:58:07,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 14:58:07,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:58:07,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 14:58:07,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-04-18 14:58:07,090 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 10 states. [2020-04-18 14:58:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:07,335 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-04-18 14:58:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 14:58:07,336 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 14:58:07,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:58:07,337 INFO L225 Difference]: With dead ends: 44 [2020-04-18 14:58:07,337 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 14:58:07,337 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2020-04-18 14:58:07,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 14:58:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 14:58:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 14:58:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-04-18 14:58:07,340 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-04-18 14:58:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:58:07,341 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-04-18 14:58:07,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 14:58:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-04-18 14:58:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:58:07,341 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 14:58:07,341 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 14:58:07,342 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 14:58:07,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:07,342 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-04-18 14:58:07,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 14:58:07,342 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1319388895] [2020-04-18 14:58:07,343 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:07,347 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 14:58:07,349 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 14:58:07,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:58:07,350 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 14:58:07,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:07,351 INFO L82 PathProgramCache]: Analyzing trace with hash 465346242, now seen corresponding path program 2 times [2020-04-18 14:58:07,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:07,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596682663] [2020-04-18 14:58:07,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:07,387 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 14:58:07,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596682663] [2020-04-18 14:58:07,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:07,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 14:58:07,388 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:07,389 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:07,394 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 100 transitions. [2020-04-18 14:58:07,394 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:07,397 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:58:07,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:07,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 14:58:07,398 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 14:58:07,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:07,402 INFO L93 Difference]: Finished difference Result 266 states and 720 transitions. [2020-04-18 14:58:07,402 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 720 transitions. [2020-04-18 14:58:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:58:07,403 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 14:58:07,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:07,404 INFO L82 PathProgramCache]: Analyzing trace with hash 465289512, now seen corresponding path program 3 times [2020-04-18 14:58:07,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:07,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421882848] [2020-04-18 14:58:07,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:07,435 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 14:58:07,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421882848] [2020-04-18 14:58:07,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:07,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:58:07,437 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:07,438 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:07,444 INFO L259 McrAutomatonBuilder]: Finished intersection with 65 states and 110 transitions. [2020-04-18 14:58:07,444 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:07,449 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 14:58:07,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:07,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 14:58:07,450 INFO L87 Difference]: Start difference. First operand 266 states and 720 transitions. Second operand 3 states. [2020-04-18 14:58:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:07,459 INFO L93 Difference]: Finished difference Result 410 states and 1044 transitions. [2020-04-18 14:58:07,460 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1044 transitions. [2020-04-18 14:58:07,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:58:07,461 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 14:58:07,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:07,461 INFO L82 PathProgramCache]: Analyzing trace with hash -306447960, now seen corresponding path program 4 times [2020-04-18 14:58:07,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:07,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908609383] [2020-04-18 14:58:07,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:07,491 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 14:58:07,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908609383] [2020-04-18 14:58:07,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:07,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:58:07,492 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:07,493 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:07,499 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 112 transitions. [2020-04-18 14:58:07,500 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:07,515 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 14:58:07,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 14:58:07,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 14:58:07,517 INFO L87 Difference]: Start difference. First operand 410 states and 1044 transitions. Second operand 4 states. [2020-04-18 14:58:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:07,539 INFO L93 Difference]: Finished difference Result 558 states and 1382 transitions. [2020-04-18 14:58:07,539 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1382 transitions. [2020-04-18 14:58:07,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:58:07,540 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 14:58:07,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:07,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1970250456, now seen corresponding path program 5 times [2020-04-18 14:58:07,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:07,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757544536] [2020-04-18 14:58:07,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:07,563 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 14:58:07,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757544536] [2020-04-18 14:58:07,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:07,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 14:58:07,564 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:07,566 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:07,571 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 80 transitions. [2020-04-18 14:58:07,571 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:07,584 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 14:58:07,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 14:58:07,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 14:58:07,584 INFO L87 Difference]: Start difference. First operand 558 states and 1382 transitions. Second operand 3 states. [2020-04-18 14:58:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:07,595 INFO L93 Difference]: Finished difference Result 866 states and 1998 transitions. [2020-04-18 14:58:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1998 transitions. [2020-04-18 14:58:07,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:58:07,598 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 14:58:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:07,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1968135636, now seen corresponding path program 6 times [2020-04-18 14:58:07,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:07,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006856324] [2020-04-18 14:58:07,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:07,661 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 14:58:07,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006856324] [2020-04-18 14:58:07,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:07,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 14:58:07,662 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:07,663 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:07,668 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 72 transitions. [2020-04-18 14:58:07,668 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:07,705 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 14:58:07,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 14:58:07,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-04-18 14:58:07,705 INFO L87 Difference]: Start difference. First operand 866 states and 1998 transitions. Second operand 5 states. [2020-04-18 14:58:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:07,780 INFO L93 Difference]: Finished difference Result 970 states and 2120 transitions. [2020-04-18 14:58:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 2120 transitions. [2020-04-18 14:58:07,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 14:58:07,783 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 14:58:07,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 14:58:07,783 INFO L82 PathProgramCache]: Analyzing trace with hash 446231490, now seen corresponding path program 7 times [2020-04-18 14:58:07,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 14:58:07,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61644162] [2020-04-18 14:58:07,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 14:58:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 14:58:07,827 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 14:58:07,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61644162] [2020-04-18 14:58:07,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 14:58:07,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 14:58:07,828 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 14:58:07,829 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 14:58:07,833 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 70 transitions. [2020-04-18 14:58:07,834 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 14:58:07,848 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 14:58:07,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 14:58:07,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-04-18 14:58:07,849 INFO L87 Difference]: Start difference. First operand 970 states and 2120 transitions. Second operand 6 states. [2020-04-18 14:58:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:07,945 INFO L93 Difference]: Finished difference Result 982 states and 2126 transitions. [2020-04-18 14:58:07,946 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 2126 transitions. [2020-04-18 14:58:07,948 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:58:07,948 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1319388895] [2020-04-18 14:58:07,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 14:58:07,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 14:58:07,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1319388895] [2020-04-18 14:58:07,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 14:58:07,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 14:58:07,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 14:58:07,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-04-18 14:58:07,950 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 11 states. [2020-04-18 14:58:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 14:58:08,144 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-04-18 14:58:08,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 14:58:08,145 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-04-18 14:58:08,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 14:58:08,145 INFO L225 Difference]: With dead ends: 37 [2020-04-18 14:58:08,145 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 14:58:08,146 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2020-04-18 14:58:08,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 14:58:08,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 14:58:08,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 14:58:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 14:58:08,147 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 14:58:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 14:58:08,147 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 14:58:08,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 14:58:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 14:58:08,147 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 14:58:08,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:58:08 BasicIcfg [2020-04-18 14:58:08,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 14:58:08,153 INFO L168 Benchmark]: Toolchain (without parser) took 7357.66 ms. Allocated memory was 144.2 MB in the beginning and 289.9 MB in the end (delta: 145.8 MB). Free memory was 100.4 MB in the beginning and 91.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 155.1 MB. Max. memory is 7.1 GB. [2020-04-18 14:58:08,154 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 14:58:08,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.97 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 98.3 MB in the beginning and 158.8 MB in the end (delta: -60.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-04-18 14:58:08,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.83 ms. Allocated memory is still 201.3 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 14:58:08,155 INFO L168 Benchmark]: Boogie Preprocessor took 28.51 ms. Allocated memory is still 201.3 MB. Free memory was 156.8 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 14:58:08,156 INFO L168 Benchmark]: RCFGBuilder took 458.52 ms. Allocated memory is still 201.3 MB. Free memory was 155.4 MB in the beginning and 133.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 14:58:08,156 INFO L168 Benchmark]: TraceAbstraction took 6098.39 ms. Allocated memory was 201.3 MB in the beginning and 289.9 MB in the end (delta: 88.6 MB). Free memory was 133.0 MB in the beginning and 91.0 MB in the end (delta: 42.0 MB). Peak memory consumption was 130.6 MB. Max. memory is 7.1 GB. [2020-04-18 14:58:08,159 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 696.97 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 98.3 MB in the beginning and 158.8 MB in the end (delta: -60.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.83 ms. Allocated memory is still 201.3 MB. Free memory was 158.8 MB in the beginning and 156.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.51 ms. Allocated memory is still 201.3 MB. Free memory was 156.8 MB in the beginning and 155.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.52 ms. Allocated memory is still 201.3 MB. Free memory was 155.4 MB in the beginning and 133.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6098.39 ms. Allocated memory was 201.3 MB in the beginning and 289.9 MB in the end (delta: 88.6 MB). Free memory was 133.0 MB in the beginning and 91.0 MB in the end (delta: 42.0 MB). Peak memory consumption was 130.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 146 SDtfs, 159 SDslu, 359 SDs, 0 SdLazy, 452 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 507 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 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, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 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...