/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:11:24,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:11:24,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:11:24,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:11:24,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:11:24,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:11:24,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:11:24,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:11:24,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:11:24,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:11:24,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:11:24,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:11:24,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:11:24,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:11:24,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:11:24,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:11:24,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:11:24,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:11:24,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:11:24,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:11:24,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:11:24,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:11:24,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:11:24,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:11:24,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 22:11:24,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 22:11:24,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 22:11:24,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 22:11:24,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 22:11:24,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 22:11:24,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:11:24,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:11:24,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:11:24,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:11:24,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:11:24,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:11:24,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:11:24,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:11:24,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:11:24,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:11:24,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:11:24,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:11:24,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:11:24,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:11:24,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:11:24,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:11:24,615 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:11:24,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:11:24,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:11:24,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:11:24,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:11:24,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:11:24,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:11:24,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:11:24,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:11:24,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:11:24,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:11:24,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:11:24,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:11:24,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:11:24,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:11:24,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:11:24,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:11:24,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:11:24,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:11:24,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:11:24,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:11:24,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:11:24,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:11:24,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:11:24,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:11:24,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:11:24,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:11:24,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:11:24,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:11:24,911 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:11:24,912 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-10-15 22:11:24,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10111b02c/0ba5549b1b654ecbb29f35b0dea232dd/FLAG53a0cf992 [2020-10-15 22:11:25,548 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:11:25,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2020-10-15 22:11:25,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10111b02c/0ba5549b1b654ecbb29f35b0dea232dd/FLAG53a0cf992 [2020-10-15 22:11:25,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10111b02c/0ba5549b1b654ecbb29f35b0dea232dd [2020-10-15 22:11:25,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:11:25,850 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:11:25,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:11:25,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:11:25,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:11:25,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:11:25" (1/1) ... [2020-10-15 22:11:25,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd7047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:25, skipping insertion in model container [2020-10-15 22:11:25,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:11:25" (1/1) ... [2020-10-15 22:11:25,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:11:25,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:11:26,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:11:26,373 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:11:26,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:11:26,488 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:11:26,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26 WrapperNode [2020-10-15 22:11:26,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:11:26,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:11:26,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:11:26,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:11:26,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26" (1/1) ... [2020-10-15 22:11:26,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26" (1/1) ... [2020-10-15 22:11:26,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:11:26,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:11:26,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:11:26,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:11:26,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26" (1/1) ... [2020-10-15 22:11:26,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26" (1/1) ... [2020-10-15 22:11:26,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26" (1/1) ... [2020-10-15 22:11:26,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26" (1/1) ... [2020-10-15 22:11:26,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26" (1/1) ... [2020-10-15 22:11:26,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26" (1/1) ... [2020-10-15 22:11:26,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26" (1/1) ... [2020-10-15 22:11:26,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:11:26,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:11:26,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:11:26,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:11:26,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:11:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:11:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:11:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:11:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:11:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:11:26,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:11:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:11:26,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:11:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:11:26,637 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:11:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:11:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:11:26,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:11:26,640 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:11:26,993 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:11:26,994 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:11:26,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:11:26 BoogieIcfgContainer [2020-10-15 22:11:26,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:11:26,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:11:26,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:11:27,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:11:27,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:11:25" (1/3) ... [2020-10-15 22:11:27,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5293ec09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:11:27, skipping insertion in model container [2020-10-15 22:11:27,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:11:26" (2/3) ... [2020-10-15 22:11:27,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5293ec09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:11:27, skipping insertion in model container [2020-10-15 22:11:27,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:11:26" (3/3) ... [2020-10-15 22:11:27,004 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2020-10-15 22:11:27,015 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:11:27,016 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:11:27,023 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:11:27,024 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:11:27,049 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,050 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,051 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,053 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,055 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,056 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,056 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,057 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,057 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,061 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,061 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,062 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,062 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,067 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,067 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,067 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,068 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,070 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,070 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:11:27,085 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 22:11:27,103 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:11:27,103 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:11:27,104 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:11:27,104 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:11:27,104 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:11:27,104 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:11:27,104 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:11:27,104 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:11:27,116 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:11:27,119 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 22:11:27,121 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 22:11:27,123 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-15 22:11:27,171 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-15 22:11:27,172 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:11:27,178 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 22:11:27,181 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 22:11:28,677 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-15 22:11:28,677 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-15 22:11:28,684 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 22:11:28,721 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 22:11:28,723 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 22:11:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:11:28,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:28,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:28,732 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:28,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-15 22:11:28,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:28,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547260884] [2020-10-15 22:11:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:28,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547260884] [2020-10-15 22:11:28,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:28,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 22:11:28,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969991382] [2020-10-15 22:11:28,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 22:11:28,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:28,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 22:11:28,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:11:28,970 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 22:11:29,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:29,017 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-15 22:11:29,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 22:11:29,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 22:11:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:29,036 INFO L225 Difference]: With dead ends: 282 [2020-10-15 22:11:29,037 INFO L226 Difference]: Without dead ends: 218 [2020-10-15 22:11:29,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 22:11:29,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-15 22:11:29,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-15 22:11:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-15 22:11:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-15 22:11:29,116 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-15 22:11:29,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:29,121 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-15 22:11:29,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 22:11:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-15 22:11:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:11:29,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:29,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:29,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:11:29,125 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:29,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-15 22:11:29,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:29,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469421058] [2020-10-15 22:11:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:29,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469421058] [2020-10-15 22:11:29,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:29,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:29,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442651860] [2020-10-15 22:11:29,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:29,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:29,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:29,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:29,244 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-15 22:11:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:29,268 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-15 22:11:29,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:11:29,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 22:11:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:29,270 INFO L225 Difference]: With dead ends: 242 [2020-10-15 22:11:29,270 INFO L226 Difference]: Without dead ends: 116 [2020-10-15 22:11:29,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-15 22:11:29,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-15 22:11:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-15 22:11:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-10-15 22:11:29,282 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-10-15 22:11:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:29,282 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-10-15 22:11:29,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-10-15 22:11:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:11:29,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:29,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:29,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:11:29,284 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-15 22:11:29,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:29,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900190634] [2020-10-15 22:11:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:29,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900190634] [2020-10-15 22:11:29,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:29,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:29,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121221385] [2020-10-15 22:11:29,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:29,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:29,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:29,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:29,340 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 4 states. [2020-10-15 22:11:29,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:29,365 INFO L93 Difference]: Finished difference Result 164 states and 394 transitions. [2020-10-15 22:11:29,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:11:29,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-15 22:11:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:29,367 INFO L225 Difference]: With dead ends: 164 [2020-10-15 22:11:29,367 INFO L226 Difference]: Without dead ends: 92 [2020-10-15 22:11:29,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-15 22:11:29,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-15 22:11:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-15 22:11:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 214 transitions. [2020-10-15 22:11:29,376 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 214 transitions. Word has length 11 [2020-10-15 22:11:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:29,376 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 214 transitions. [2020-10-15 22:11:29,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:29,376 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 214 transitions. [2020-10-15 22:11:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 22:11:29,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:29,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:29,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:11:29,378 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:29,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:29,378 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-10-15 22:11:29,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:29,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582806020] [2020-10-15 22:11:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:29,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582806020] [2020-10-15 22:11:29,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:29,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:29,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983822174] [2020-10-15 22:11:29,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:29,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:29,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:29,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:29,443 INFO L87 Difference]: Start difference. First operand 92 states and 214 transitions. Second operand 4 states. [2020-10-15 22:11:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:29,465 INFO L93 Difference]: Finished difference Result 122 states and 275 transitions. [2020-10-15 22:11:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:29,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-15 22:11:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:29,466 INFO L225 Difference]: With dead ends: 122 [2020-10-15 22:11:29,466 INFO L226 Difference]: Without dead ends: 68 [2020-10-15 22:11:29,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:29,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-15 22:11:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-15 22:11:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-15 22:11:29,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-15 22:11:29,472 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-10-15 22:11:29,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:29,473 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-15 22:11:29,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-15 22:11:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:11:29,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:29,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:29,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:11:29,475 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:29,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:29,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-10-15 22:11:29,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:29,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767005560] [2020-10-15 22:11:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:29,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767005560] [2020-10-15 22:11:29,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:29,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:11:29,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107330830] [2020-10-15 22:11:29,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:29,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:29,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:29,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:29,569 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-15 22:11:29,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:29,599 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-15 22:11:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:11:29,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 22:11:29,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:29,601 INFO L225 Difference]: With dead ends: 81 [2020-10-15 22:11:29,601 INFO L226 Difference]: Without dead ends: 59 [2020-10-15 22:11:29,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-15 22:11:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-15 22:11:29,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-15 22:11:29,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-15 22:11:29,614 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-15 22:11:29,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:29,617 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-15 22:11:29,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:29,617 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-15 22:11:29,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:11:29,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:29,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:29,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:11:29,619 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:29,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:29,619 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-15 22:11:29,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:29,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231342925] [2020-10-15 22:11:29,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:29,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231342925] [2020-10-15 22:11:29,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:29,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:29,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100695666] [2020-10-15 22:11:29,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:11:29,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:29,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:11:29,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:29,701 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-15 22:11:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:29,741 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-15 22:11:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:11:29,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 22:11:29,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:29,742 INFO L225 Difference]: With dead ends: 60 [2020-10-15 22:11:29,742 INFO L226 Difference]: Without dead ends: 45 [2020-10-15 22:11:29,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:11:29,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-15 22:11:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-15 22:11:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-15 22:11:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-15 22:11:29,746 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-15 22:11:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:29,746 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-15 22:11:29,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:11:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-15 22:11:29,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:11:29,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:29,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:29,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:11:29,748 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:29,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:29,748 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-15 22:11:29,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:29,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115896966] [2020-10-15 22:11:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:29,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115896966] [2020-10-15 22:11:29,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:29,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:11:29,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679252777] [2020-10-15 22:11:29,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:11:29,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:29,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:11:29,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:11:29,830 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-15 22:11:29,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:29,884 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-15 22:11:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:11:29,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 22:11:29,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:29,885 INFO L225 Difference]: With dead ends: 42 [2020-10-15 22:11:29,885 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 22:11:29,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:11:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 22:11:29,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-15 22:11:29,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-15 22:11:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-15 22:11:29,888 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-15 22:11:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:29,889 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-15 22:11:29,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:11:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-15 22:11:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 22:11:29,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:11:29,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:11:29,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:11:29,890 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:11:29,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:11:29,891 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-15 22:11:29,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:11:29,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945565966] [2020-10-15 22:11:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:11:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:11:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:11:29,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945565966] [2020-10-15 22:11:29,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:11:29,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:11:29,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386911997] [2020-10-15 22:11:29,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:11:29,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:11:29,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:11:29,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:11:29,930 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-15 22:11:29,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:11:29,943 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-15 22:11:29,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:11:29,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-15 22:11:29,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:11:29,944 INFO L225 Difference]: With dead ends: 35 [2020-10-15 22:11:29,944 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:11:29,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:11:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:11:29,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:11:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:11:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:11:29,945 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 22:11:29,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:11:29,945 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:11:29,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:11:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:11:29,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:11:29,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:11:29,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:11:29 BasicIcfg [2020-10-15 22:11:29,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:11:29,952 INFO L168 Benchmark]: Toolchain (without parser) took 4100.58 ms. Allocated memory was 254.3 MB in the beginning and 373.8 MB in the end (delta: 119.5 MB). Free memory was 207.5 MB in the beginning and 233.6 MB in the end (delta: -26.1 MB). Peak memory consumption was 93.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:29,953 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 254.3 MB. Free memory was 229.8 MB in the beginning and 229.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-15 22:11:29,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.97 ms. Allocated memory was 254.3 MB in the beginning and 322.4 MB in the end (delta: 68.2 MB). Free memory was 207.5 MB in the beginning and 273.3 MB in the end (delta: -65.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:29,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.17 ms. Allocated memory is still 322.4 MB. Free memory was 273.3 MB in the beginning and 271.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:29,955 INFO L168 Benchmark]: Boogie Preprocessor took 26.21 ms. Allocated memory is still 322.4 MB. Free memory was 271.7 MB in the beginning and 270.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:29,956 INFO L168 Benchmark]: RCFGBuilder took 432.07 ms. Allocated memory is still 322.4 MB. Free memory was 270.0 MB in the beginning and 246.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:29,957 INFO L168 Benchmark]: TraceAbstraction took 2951.85 ms. Allocated memory was 322.4 MB in the beginning and 373.8 MB in the end (delta: 51.4 MB). Free memory was 246.9 MB in the beginning and 233.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 64.7 MB. Max. memory is 14.2 GB. [2020-10-15 22:11:29,962 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 254.3 MB. Free memory was 229.8 MB in the beginning and 229.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 636.97 ms. Allocated memory was 254.3 MB in the beginning and 322.4 MB in the end (delta: 68.2 MB). Free memory was 207.5 MB in the beginning and 273.3 MB in the end (delta: -65.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.17 ms. Allocated memory is still 322.4 MB. Free memory was 273.3 MB in the beginning and 271.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.21 ms. Allocated memory is still 322.4 MB. Free memory was 271.7 MB in the beginning and 270.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 432.07 ms. Allocated memory is still 322.4 MB. Free memory was 270.0 MB in the beginning and 246.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2951.85 ms. Allocated memory was 322.4 MB in the beginning and 373.8 MB in the end (delta: 51.4 MB). Free memory was 246.9 MB in the beginning and 233.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 64.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 843 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 61 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2810 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 138 SDtfs, 138 SDslu, 173 SDs, 0 SdLazy, 111 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...