/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:40:08,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:40:08,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:40:08,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:40:08,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:40:08,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:40:08,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:40:08,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:40:08,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:40:08,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:40:08,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:40:08,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:40:08,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:40:08,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:40:08,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:40:08,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:40:08,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:40:08,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:40:08,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:40:08,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:40:08,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:40:08,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:40:08,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:40:08,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:40:08,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:40:08,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:40:08,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:40:08,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:40:08,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:40:08,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:40:08,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:40:08,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:40:08,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:40:08,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:40:08,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:40:08,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:40:08,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:40:08,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:40:08,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:40:08,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:40:08,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:40:08,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 13:40:08,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:40:08,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:40:08,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:40:08,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:40:08,614 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:40:08,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:40:08,615 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:40:08,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:40:08,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:40:08,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:40:08,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:40:08,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:40:08,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:40:08,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:40:08,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:40:08,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:40:08,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:40:08,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:40:08,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:40:08,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:40:08,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:40:08,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:40:08,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:40:08,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:40:08,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:40:08,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:40:08,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:40:08,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:40:08,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:40:08,622 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:40:08,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:40:08,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:40:08,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:40:08,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:40:08,964 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:40:08,965 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25.c [2020-10-12 13:40:09,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b283cb58/f5bab11a81ea4f1789d931596310a33e/FLAGedd1be770 [2020-10-12 13:40:09,955 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:40:09,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label25.c [2020-10-12 13:40:10,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b283cb58/f5bab11a81ea4f1789d931596310a33e/FLAGedd1be770 [2020-10-12 13:40:10,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b283cb58/f5bab11a81ea4f1789d931596310a33e [2020-10-12 13:40:10,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:40:10,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:40:10,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:40:10,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:40:10,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:40:10,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:40:10" (1/1) ... [2020-10-12 13:40:10,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4815436f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:40:10, skipping insertion in model container [2020-10-12 13:40:10,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:40:10" (1/1) ... [2020-10-12 13:40:10,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:40:10,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:40:12,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:40:12,345 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:40:13,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:40:13,375 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:40:13,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:40:13 WrapperNode [2020-10-12 13:40:13,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:40:13,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:40:13,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:40:13,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:40:13,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:40:13" (1/1) ... [2020-10-12 13:40:13,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:40:13" (1/1) ... [2020-10-12 13:40:13,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:40:13" (1/1) ... [2020-10-12 13:40:13,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:40:13" (1/1) ... [2020-10-12 13:40:13,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:40:13" (1/1) ... [2020-10-12 13:40:13,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:40:13" (1/1) ... [2020-10-12 13:40:13,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:40:13" (1/1) ... [2020-10-12 13:40:13,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:40:13,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:40:13,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:40:13,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:40:13,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:40:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 13:40:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:40:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:40:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:40:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:40:13,838 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:40:13,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:40:13,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:40:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:40:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:40:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:40:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:40:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:40:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:40:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:40:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:40:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:40:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:40:26,059 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:40:26,060 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:40:26,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:40:26 BoogieIcfgContainer [2020-10-12 13:40:26,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:40:26,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:40:26,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:40:26,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:40:26,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:40:10" (1/3) ... [2020-10-12 13:40:26,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1770e9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:40:26, skipping insertion in model container [2020-10-12 13:40:26,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:40:13" (2/3) ... [2020-10-12 13:40:26,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1770e9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:40:26, skipping insertion in model container [2020-10-12 13:40:26,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:40:26" (3/3) ... [2020-10-12 13:40:26,090 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label25.c [2020-10-12 13:40:26,107 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:40:26,118 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:40:26,138 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:40:26,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:40:26,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:40:26,176 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:40:26,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:40:26,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:40:26,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:40:26,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:40:26,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:40:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-12 13:40:26,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 13:40:26,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:40:26,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:40:26,236 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:40:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:40:26,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1804033680, now seen corresponding path program 1 times [2020-10-12 13:40:26,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:40:26,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208489813] [2020-10-12 13:40:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:40:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:26,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:26,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 13:40:26,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:26,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-12 13:40:26,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:26,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:40:26,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:40:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 13:40:26,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:40:27,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:40:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:27,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:27,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:40:27,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:27,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:40:27,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:27,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:40:27,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:40:27,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:40:27,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:40:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:40:27,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208489813] [2020-10-12 13:40:27,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:40:27,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:40:27,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501121311] [2020-10-12 13:40:27,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:40:27,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:40:27,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:40:27,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:40:27,138 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-12 13:40:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:40:41,710 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-12 13:40:41,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:40:41,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-12 13:40:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:40:41,763 INFO L225 Difference]: With dead ends: 3152 [2020-10-12 13:40:41,763 INFO L226 Difference]: Without dead ends: 1954 [2020-10-12 13:40:41,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:40:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-12 13:40:41,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-12 13:40:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-12 13:40:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-12 13:40:41,967 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 29 [2020-10-12 13:40:41,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:40:41,968 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-12 13:40:41,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:40:41,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-12 13:40:41,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 13:40:41,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:40:41,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:40:41,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:40:41,974 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:40:41,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:40:41,975 INFO L82 PathProgramCache]: Analyzing trace with hash -678409448, now seen corresponding path program 1 times [2020-10-12 13:40:41,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:40:41,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412785248] [2020-10-12 13:40:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:40:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:42,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:43,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:43,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:40:43,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:40:43,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1563 [2020-10-12 13:40:43,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:40:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:40:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:40:43,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:40:43,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:40:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:43,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:43,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:43,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:40:43,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:40:43,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:40:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:40:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:40:43,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:40:43,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:40:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:40:43,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:40:44,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:40:44,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:40:44,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:40:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 13:40:44,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:40:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:40:44,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:40:44,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:40:44,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-12 13:40:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:40:44,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412785248] [2020-10-12 13:40:44,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:40:44,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:40:44,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101657994] [2020-10-12 13:40:44,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:40:44,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:40:44,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:40:44,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:40:44,134 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 7 states. [2020-10-12 13:41:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:41:10,237 INFO L93 Difference]: Finished difference Result 5683 states and 9339 transitions. [2020-10-12 13:41:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:41:10,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-12 13:41:10,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:41:10,267 INFO L225 Difference]: With dead ends: 5683 [2020-10-12 13:41:10,267 INFO L226 Difference]: Without dead ends: 3804 [2020-10-12 13:41:10,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:41:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2020-10-12 13:41:10,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 3710. [2020-10-12 13:41:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3710 states. [2020-10-12 13:41:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 5581 transitions. [2020-10-12 13:41:10,414 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 5581 transitions. Word has length 99 [2020-10-12 13:41:10,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:41:10,414 INFO L479 AbstractCegarLoop]: Abstraction has 3710 states and 5581 transitions. [2020-10-12 13:41:10,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:41:10,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 5581 transitions. [2020-10-12 13:41:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 13:41:10,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:41:10,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:41:10,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:41:10,420 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:41:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:41:10,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1989320437, now seen corresponding path program 1 times [2020-10-12 13:41:10,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:41:10,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681291005] [2020-10-12 13:41:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:41:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:10,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:10,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:11,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:11,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:41:11,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:41:11,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-12 13:41:11,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:41:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:41:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:41:11,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:41:11,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:41:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:11,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:11,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:11,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:41:11,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:11,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:41:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:41:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:41:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:41:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:41:11,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:41:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:11,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:11,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:41:11,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-12 13:41:11,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:41:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:41:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:41:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:41:11,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681291005] [2020-10-12 13:41:11,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:41:11,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:41:11,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593570920] [2020-10-12 13:41:11,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:41:11,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:41:11,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:41:11,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:41:11,983 INFO L87 Difference]: Start difference. First operand 3710 states and 5581 transitions. Second operand 7 states. [2020-10-12 13:41:41,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:41:41,231 INFO L93 Difference]: Finished difference Result 8457 states and 13129 transitions. [2020-10-12 13:41:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:41:41,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-12 13:41:41,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:41:41,266 INFO L225 Difference]: With dead ends: 8457 [2020-10-12 13:41:41,266 INFO L226 Difference]: Without dead ends: 4753 [2020-10-12 13:41:41,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:41:41,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4753 states. [2020-10-12 13:41:41,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4753 to 4552. [2020-10-12 13:41:41,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4552 states. [2020-10-12 13:41:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6190 transitions. [2020-10-12 13:41:41,434 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6190 transitions. Word has length 104 [2020-10-12 13:41:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:41:41,435 INFO L479 AbstractCegarLoop]: Abstraction has 4552 states and 6190 transitions. [2020-10-12 13:41:41,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:41:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6190 transitions. [2020-10-12 13:41:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 13:41:41,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:41:41,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:41:41,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:41:41,443 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:41:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:41:41,446 INFO L82 PathProgramCache]: Analyzing trace with hash -339210055, now seen corresponding path program 1 times [2020-10-12 13:41:41,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:41:41,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741777140] [2020-10-12 13:41:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:41:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:41,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:41,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:42,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:42,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:42,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 13:41:42,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:41:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-10-12 13:41:42,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:41:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:41:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:41:42,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:41:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:42,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:42,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:42,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:41:42,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:41:42,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:41:42,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:41:42,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:41:42,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:41:42,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:42,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:41:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:41:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:42,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:41:42,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:41:42,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:41:42,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:41:42,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-12 13:41:42,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:41:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:41:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:41:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:41:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:41:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:41:43,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741777140] [2020-10-12 13:41:43,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:41:43,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:41:43,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440996269] [2020-10-12 13:41:43,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:41:43,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:41:43,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:41:43,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:41:43,024 INFO L87 Difference]: Start difference. First operand 4552 states and 6190 transitions. Second operand 7 states. [2020-10-12 13:42:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:42:08,892 INFO L93 Difference]: Finished difference Result 15290 states and 21995 transitions. [2020-10-12 13:42:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:42:08,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-12 13:42:08,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:42:08,957 INFO L225 Difference]: With dead ends: 15290 [2020-10-12 13:42:08,957 INFO L226 Difference]: Without dead ends: 10744 [2020-10-12 13:42:08,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:42:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2020-10-12 13:42:09,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10615. [2020-10-12 13:42:09,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10615 states. [2020-10-12 13:42:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10615 states to 10615 states and 14194 transitions. [2020-10-12 13:42:09,330 INFO L78 Accepts]: Start accepts. Automaton has 10615 states and 14194 transitions. Word has length 106 [2020-10-12 13:42:09,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:42:09,330 INFO L479 AbstractCegarLoop]: Abstraction has 10615 states and 14194 transitions. [2020-10-12 13:42:09,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:42:09,331 INFO L276 IsEmpty]: Start isEmpty. Operand 10615 states and 14194 transitions. [2020-10-12 13:42:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 13:42:09,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:42:09,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:42:09,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:42:09,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:42:09,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:42:09,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1503000058, now seen corresponding path program 1 times [2020-10-12 13:42:09,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:42:09,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571552591] [2020-10-12 13:42:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:42:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:11,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:11,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 13:42:11,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:42:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-10-12 13:42:11,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:42:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 13:42:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:42:11,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:42:11,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:42:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:11,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:11,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:42:11,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:11,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:42:11,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:42:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:42:11,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:42:11,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:42:11,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:42:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:11,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:11,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:42:11,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:11,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-12 13:42:11,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:11,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:42:11,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:42:11,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:42:11,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 13:42:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:11,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:12,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:12,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 13:42:12,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:12,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-12 13:42:12,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:42:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:42:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:42:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:42:12,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571552591] [2020-10-12 13:42:12,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:42:12,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:42:12,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334714347] [2020-10-12 13:42:12,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:42:12,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:42:12,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:42:12,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:42:12,223 INFO L87 Difference]: Start difference. First operand 10615 states and 14194 transitions. Second operand 7 states. [2020-10-12 13:42:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:42:45,204 INFO L93 Difference]: Finished difference Result 22188 states and 32294 transitions. [2020-10-12 13:42:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:42:45,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-12 13:42:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:42:45,272 INFO L225 Difference]: With dead ends: 22188 [2020-10-12 13:42:45,272 INFO L226 Difference]: Without dead ends: 16509 [2020-10-12 13:42:45,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:42:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16509 states. [2020-10-12 13:42:45,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16509 to 16045. [2020-10-12 13:42:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16045 states. [2020-10-12 13:42:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16045 states to 16045 states and 20803 transitions. [2020-10-12 13:42:45,732 INFO L78 Accepts]: Start accepts. Automaton has 16045 states and 20803 transitions. Word has length 248 [2020-10-12 13:42:45,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:42:45,734 INFO L479 AbstractCegarLoop]: Abstraction has 16045 states and 20803 transitions. [2020-10-12 13:42:45,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:42:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 16045 states and 20803 transitions. [2020-10-12 13:42:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-12 13:42:45,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:42:45,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:42:45,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:42:45,744 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:42:45,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:42:45,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1439551691, now seen corresponding path program 1 times [2020-10-12 13:42:45,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:42:45,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181006809] [2020-10-12 13:42:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:42:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:45,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:50,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:50,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-12 13:42:50,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:42:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 13:42:50,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:42:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:42:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 13:42:50,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:50,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:42:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:50,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:50,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:42:50,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:50,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:42:50,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:50,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:42:50,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:42:50,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:42:50,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:42:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:51,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:51,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:42:51,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:51,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 13:42:51,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:42:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:42:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:42:51,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 13:42:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:51,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:51,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:51,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:42:51,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:51,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 13:42:51,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:51,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:42:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 13:42:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:42:51,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-12 13:42:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:42:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:42:51,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:42:51,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:42:51,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:42:51,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 13:42:51,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:42:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:42:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 13:42:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:42:51,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:42:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 66 proven. 142 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-12 13:42:51,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181006809] [2020-10-12 13:42:51,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:42:51,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:42:51,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590877948] [2020-10-12 13:42:51,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:42:51,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:42:51,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:42:51,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:42:51,918 INFO L87 Difference]: Start difference. First operand 16045 states and 20803 transitions. Second operand 7 states. [2020-10-12 13:43:19,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:43:19,782 INFO L93 Difference]: Finished difference Result 31744 states and 41638 transitions. [2020-10-12 13:43:19,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:43:19,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-12 13:43:19,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:43:19,856 INFO L225 Difference]: With dead ends: 31744 [2020-10-12 13:43:19,856 INFO L226 Difference]: Without dead ends: 16508 [2020-10-12 13:43:19,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:43:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16508 states. [2020-10-12 13:43:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16508 to 16174. [2020-10-12 13:43:20,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16174 states. [2020-10-12 13:43:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16174 states to 16174 states and 21066 transitions. [2020-10-12 13:43:20,307 INFO L78 Accepts]: Start accepts. Automaton has 16174 states and 21066 transitions. Word has length 274 [2020-10-12 13:43:20,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:43:20,308 INFO L479 AbstractCegarLoop]: Abstraction has 16174 states and 21066 transitions. [2020-10-12 13:43:20,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:43:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 16174 states and 21066 transitions. [2020-10-12 13:43:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-12 13:43:20,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:43:20,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:43:20,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:43:20,317 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:43:20,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:43:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1564143179, now seen corresponding path program 1 times [2020-10-12 13:43:20,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:43:20,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865997492] [2020-10-12 13:43:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:43:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:20,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:21,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:21,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:25,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:25,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-12 13:43:25,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:43:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4622 [2020-10-12 13:43:25,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:43:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:43:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-12 13:43:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:43:25,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:43:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:25,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:25,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:43:25,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:43:25,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:43:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:43:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:43:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:43:25,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:43:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:25,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:25,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:43:25,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:43:25,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-12 13:43:25,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:25,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:43:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:43:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 13:43:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:43:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 13:43:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:43:26,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:43:26,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:43:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-12 13:43:26,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:43:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:43:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:43:26,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 13:43:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:43:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-12 13:43:26,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865997492] [2020-10-12 13:43:26,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:43:26,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:43:26,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377850250] [2020-10-12 13:43:26,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:43:26,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:43:26,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:43:26,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:43:26,817 INFO L87 Difference]: Start difference. First operand 16174 states and 21066 transitions. Second operand 7 states. [2020-10-12 13:44:01,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:44:01,381 INFO L93 Difference]: Finished difference Result 31528 states and 41826 transitions. [2020-10-12 13:44:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:44:01,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-12 13:44:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:44:01,464 INFO L225 Difference]: With dead ends: 31528 [2020-10-12 13:44:01,464 INFO L226 Difference]: Without dead ends: 18513 [2020-10-12 13:44:01,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:44:01,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18513 states. [2020-10-12 13:44:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18513 to 18064. [2020-10-12 13:44:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18064 states. [2020-10-12 13:44:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18064 states to 18064 states and 23219 transitions. [2020-10-12 13:44:02,069 INFO L78 Accepts]: Start accepts. Automaton has 18064 states and 23219 transitions. Word has length 278 [2020-10-12 13:44:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:44:02,070 INFO L479 AbstractCegarLoop]: Abstraction has 18064 states and 23219 transitions. [2020-10-12 13:44:02,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:44:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 18064 states and 23219 transitions. [2020-10-12 13:44:02,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-12 13:44:02,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:44:02,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:44:02,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:44:02,078 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:44:02,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:44:02,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1568949701, now seen corresponding path program 1 times [2020-10-12 13:44:02,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:44:02,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167032755] [2020-10-12 13:44:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:44:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:44:02,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:02,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:44:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking...