/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/array-tiling/skipped.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:31:10,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:31:10,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:31:10,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:31:10,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:31:10,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:31:10,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:31:10,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:31:10,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:31:10,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:31:10,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:31:10,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:31:10,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:31:10,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:31:10,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:31:10,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:31:10,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:31:10,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:31:10,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:31:10,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:31:10,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:31:10,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:31:10,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:31:10,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:31:10,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:31:10,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:31:10,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:31:10,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:31:10,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:31:10,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:31:10,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:31:10,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:31:10,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:31:10,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:31:10,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:31:10,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:31:10,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:31:10,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:31:10,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:31:10,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:31:10,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:31:10,600 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 10:31:10,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:31:10,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:31:10,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:31:10,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:31:10,658 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:31:10,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:31:10,658 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:31:10,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:31:10,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:31:10,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:31:10,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:31:10,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:31:10,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:31:10,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:31:10,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:31:10,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:31:10,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:31:10,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:31:10,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:31:10,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:31:10,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:31:10,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:31:10,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:31:10,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:31:10,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:31:10,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:31:10,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:31:10,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:31:10,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:31:10,665 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 10:31:11,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:31:11,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:31:11,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:31:11,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:31:11,053 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:31:11,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skipped.c [2020-10-12 10:31:11,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17d7fd82d/0a6ef5e654fc41c4b719b143f9e8a352/FLAG6e55e500a [2020-10-12 10:31:11,616 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:31:11,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/skipped.c [2020-10-12 10:31:11,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17d7fd82d/0a6ef5e654fc41c4b719b143f9e8a352/FLAG6e55e500a [2020-10-12 10:31:11,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17d7fd82d/0a6ef5e654fc41c4b719b143f9e8a352 [2020-10-12 10:31:11,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:31:11,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:31:11,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:31:11,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:31:11,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:31:11,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:31:11" (1/1) ... [2020-10-12 10:31:11,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:31:11, skipping insertion in model container [2020-10-12 10:31:11,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:31:11" (1/1) ... [2020-10-12 10:31:11,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:31:12,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:31:12,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:31:12,234 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:31:12,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:31:12,275 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:31:12,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:31:12 WrapperNode [2020-10-12 10:31:12,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:31:12,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:31:12,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:31:12,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:31:12,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:31:12" (1/1) ... [2020-10-12 10:31:12,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:31:12" (1/1) ... [2020-10-12 10:31:12,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:31:12" (1/1) ... [2020-10-12 10:31:12,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:31:12" (1/1) ... [2020-10-12 10:31:12,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:31:12" (1/1) ... [2020-10-12 10:31:12,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:31:12" (1/1) ... [2020-10-12 10:31:12,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:31:12" (1/1) ... [2020-10-12 10:31:12,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:31:12,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:31:12,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:31:12,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:31:12,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:31:12" (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 10:31:12,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:31:12,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:31:12,480 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:31:12,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:31:12,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:31:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:31:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:31:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:31:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:31:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:31:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 10:31:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:31:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 10:31:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:31:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:31:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:31:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:31:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:31:12,775 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:31:12,776 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 10:31:12,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:31:12 BoogieIcfgContainer [2020-10-12 10:31:12,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:31:12,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:31:12,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:31:12,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:31:12,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:31:11" (1/3) ... [2020-10-12 10:31:12,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269a5013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:31:12, skipping insertion in model container [2020-10-12 10:31:12,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:31:12" (2/3) ... [2020-10-12 10:31:12,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269a5013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:31:12, skipping insertion in model container [2020-10-12 10:31:12,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:31:12" (3/3) ... [2020-10-12 10:31:12,792 INFO L109 eAbstractionObserver]: Analyzing ICFG skipped.c [2020-10-12 10:31:12,805 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:31:12,813 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:31:12,832 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:31:12,875 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:31:12,875 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:31:12,875 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:31:12,875 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:31:12,875 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:31:12,875 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:31:12,876 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:31:12,876 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:31:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-12 10:31:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:31:12,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:12,909 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] [2020-10-12 10:31:12,909 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:12,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:12,916 INFO L82 PathProgramCache]: Analyzing trace with hash -978746934, now seen corresponding path program 1 times [2020-10-12 10:31:12,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:12,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581990163] [2020-10-12 10:31:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:13,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 10:31:13,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:31:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-10-12 10:31:13,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:13,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:31:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:31:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:31:13,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 10:31:13,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:13,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:13,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:13,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:13,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:31:13,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:13,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 10:31:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:13,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:13,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:13,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:13,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:13,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 10:31:13,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:13,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:13,989 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 10:31:13,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581990163] [2020-10-12 10:31:13,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:31:13,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 10:31:13,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605500493] [2020-10-12 10:31:13,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:31:13,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:14,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:31:14,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:31:14,017 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 7 states. [2020-10-12 10:31:14,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:14,743 INFO L93 Difference]: Finished difference Result 108 states and 147 transitions. [2020-10-12 10:31:14,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:31:14,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-12 10:31:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:14,756 INFO L225 Difference]: With dead ends: 108 [2020-10-12 10:31:14,757 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 10:31:14,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:31:14,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 10:31:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2020-10-12 10:31:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 10:31:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-12 10:31:14,815 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 22 [2020-10-12 10:31:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:14,815 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-12 10:31:14,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:31:14,815 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-12 10:31:14,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 10:31:14,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:14,817 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 10:31:14,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:31:14,818 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:14,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:14,819 INFO L82 PathProgramCache]: Analyzing trace with hash 657216618, now seen corresponding path program 1 times [2020-10-12 10:31:14,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:14,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380281026] [2020-10-12 10:31:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:15,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:15,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 10:31:15,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:15,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-12 10:31:15,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:31:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:31:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:31:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:15,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:15,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:15,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:15,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:15,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:15,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:31:15,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:15,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:31:15,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 10:31:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:15,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:15,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:15,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:15,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:15,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:31:15,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:15,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:15,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:15,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 10:31:15,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380281026] [2020-10-12 10:31:15,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:15,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:31:15,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484229659] [2020-10-12 10:31:15,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:31:15,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:15,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:31:15,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:31:15,442 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 10 states. [2020-10-12 10:31:15,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:15,779 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-12 10:31:15,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:31:15,779 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-12 10:31:15,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:15,781 INFO L225 Difference]: With dead ends: 63 [2020-10-12 10:31:15,782 INFO L226 Difference]: Without dead ends: 61 [2020-10-12 10:31:15,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:31:15,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-12 10:31:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2020-10-12 10:31:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 10:31:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-12 10:31:15,795 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 29 [2020-10-12 10:31:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:15,795 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-12 10:31:15,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:31:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-12 10:31:15,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 10:31:15,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:15,797 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 10:31:15,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:31:15,798 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:15,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:15,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1358281196, now seen corresponding path program 1 times [2020-10-12 10:31:15,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:15,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310300812] [2020-10-12 10:31:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:16,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:16,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 10:31:16,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-12 10:31:16,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:31:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:31:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:31:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:16,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:16,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:16,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:16,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:16,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:16,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:16,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:16,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:16,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 10:31:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:16,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:16,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:16,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:16,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 10:31:16,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310300812] [2020-10-12 10:31:16,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:16,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:31:16,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053669510] [2020-10-12 10:31:16,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:31:16,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:16,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:31:16,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:31:16,404 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 11 states. [2020-10-12 10:31:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:16,659 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-10-12 10:31:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:31:16,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-12 10:31:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:16,663 INFO L225 Difference]: With dead ends: 65 [2020-10-12 10:31:16,663 INFO L226 Difference]: Without dead ends: 63 [2020-10-12 10:31:16,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:31:16,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-12 10:31:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 40. [2020-10-12 10:31:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 10:31:16,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-12 10:31:16,674 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 29 [2020-10-12 10:31:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:16,674 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-12 10:31:16,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:31:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-12 10:31:16,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:31:16,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:16,676 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 10:31:16,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:31:16,676 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:16,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash -834953827, now seen corresponding path program 1 times [2020-10-12 10:31:16,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:16,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162990079] [2020-10-12 10:31:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:17,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:17,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 10:31:17,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:17,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-12 10:31:17,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:31:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:31:17,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 10:31:17,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:17,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:17,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:17,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:17,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:17,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:17,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:17,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:17,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 10:31:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:17,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:17,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:17,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:17,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:17,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:17,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:17,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 10:31:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:17,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:17,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:17,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:17,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:31:17,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:17,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 10:31:17,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162990079] [2020-10-12 10:31:17,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:17,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:31:17,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732829433] [2020-10-12 10:31:17,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:31:17,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:17,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:31:17,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:31:17,182 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 10 states. [2020-10-12 10:31:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:17,542 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2020-10-12 10:31:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:31:17,543 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-12 10:31:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:17,544 INFO L225 Difference]: With dead ends: 69 [2020-10-12 10:31:17,544 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 10:31:17,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:31:17,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 10:31:17,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 59. [2020-10-12 10:31:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 10:31:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-12 10:31:17,557 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 37 [2020-10-12 10:31:17,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:17,558 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-12 10:31:17,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:31:17,558 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-12 10:31:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:31:17,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:17,561 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 10:31:17,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:31:17,561 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:17,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1871665567, now seen corresponding path program 1 times [2020-10-12 10:31:17,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:17,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170066253] [2020-10-12 10:31:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:18,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:18,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 10:31:18,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:18,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-12 10:31:18,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:31:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:31:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 10:31:18,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:18,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:18,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:18,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:18,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:18,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:18,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:18,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:18,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 10:31:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:18,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:18,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:18,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:18,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:18,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 10:31:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:18,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:18,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:18,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:18,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:31:18,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:18,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:18,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:18,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:18,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 10:31:18,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170066253] [2020-10-12 10:31:18,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:18,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:31:18,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878867789] [2020-10-12 10:31:18,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:31:18,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:18,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:31:18,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:31:18,199 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 11 states. [2020-10-12 10:31:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:18,581 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-10-12 10:31:18,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:31:18,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-12 10:31:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:18,583 INFO L225 Difference]: With dead ends: 73 [2020-10-12 10:31:18,583 INFO L226 Difference]: Without dead ends: 71 [2020-10-12 10:31:18,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:31:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-12 10:31:18,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 48. [2020-10-12 10:31:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 10:31:18,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-12 10:31:18,592 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 37 [2020-10-12 10:31:18,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:18,592 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-12 10:31:18,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:31:18,593 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-12 10:31:18,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 10:31:18,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:18,594 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 10:31:18,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:31:18,594 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:18,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:18,595 INFO L82 PathProgramCache]: Analyzing trace with hash 60031952, now seen corresponding path program 2 times [2020-10-12 10:31:18,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:18,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136158714] [2020-10-12 10:31:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:18,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:18,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 10:31:20,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:31:20,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1606 [2020-10-12 10:31:20,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:31:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 10:31:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 10:31:20,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:20,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:20,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:20,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:20,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 10:31:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 10:31:20,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:31:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:31:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:20,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 10:31:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:31:20,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:20,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 10:31:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:31:20,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:20,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 10:31:20,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136158714] [2020-10-12 10:31:20,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:20,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:31:20,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867761752] [2020-10-12 10:31:20,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:31:20,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:20,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:31:20,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:31:20,638 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 12 states. [2020-10-12 10:31:21,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:21,483 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-10-12 10:31:21,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:31:21,484 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-12 10:31:21,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:21,485 INFO L225 Difference]: With dead ends: 87 [2020-10-12 10:31:21,486 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 10:31:21,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:31:21,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 10:31:21,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-10-12 10:31:21,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 10:31:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-12 10:31:21,507 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 45 [2020-10-12 10:31:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:21,508 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-12 10:31:21,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:31:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-12 10:31:21,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 10:31:21,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:21,513 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 10:31:21,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:31:21,513 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:21,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:21,514 INFO L82 PathProgramCache]: Analyzing trace with hash 876024144, now seen corresponding path program 3 times [2020-10-12 10:31:21,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:21,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706630901] [2020-10-12 10:31:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:21,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:21,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:22,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 10:31:22,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:22,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-12 10:31:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:31:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:31:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 10:31:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:22,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:22,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:22,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:22,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:22,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:22,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:22,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 10:31:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:22,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:22,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:22,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:31:22,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:22,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:22,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:31:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:22,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:22,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:22,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:31:22,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:22,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:22,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:31:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:22,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:22,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:22,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:31:22,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:22,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 10:31:22,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706630901] [2020-10-12 10:31:22,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:22,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:31:22,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629250848] [2020-10-12 10:31:22,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:31:22,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:22,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:31:22,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:31:22,699 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 13 states. [2020-10-12 10:31:23,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:23,495 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2020-10-12 10:31:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:31:23,496 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-12 10:31:23,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:23,497 INFO L225 Difference]: With dead ends: 103 [2020-10-12 10:31:23,498 INFO L226 Difference]: Without dead ends: 101 [2020-10-12 10:31:23,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:31:23,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-12 10:31:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2020-10-12 10:31:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-12 10:31:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2020-10-12 10:31:23,522 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 50 [2020-10-12 10:31:23,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:23,524 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2020-10-12 10:31:23,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:31:23,524 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2020-10-12 10:31:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 10:31:23,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:23,529 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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 10:31:23,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:31:23,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:23,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:23,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1495715118, now seen corresponding path program 1 times [2020-10-12 10:31:23,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:23,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839425455] [2020-10-12 10:31:23,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:23,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:23,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 10:31:24,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-12 10:31:24,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:31:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:31:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 10:31:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:24,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:24,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:24,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:24,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:24,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:24,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:24,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:24,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 10:31:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:24,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:24,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:24,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:31:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:24,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:24,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:24,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:24,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:24,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:31:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:24,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:24,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:24,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:24,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:24,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:31:24,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:24,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 10:31:24,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839425455] [2020-10-12 10:31:24,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:24,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:31:24,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975495135] [2020-10-12 10:31:24,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:31:24,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:24,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:31:24,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:31:24,450 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand 14 states. [2020-10-12 10:31:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:25,116 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2020-10-12 10:31:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:31:25,117 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-10-12 10:31:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:25,118 INFO L225 Difference]: With dead ends: 107 [2020-10-12 10:31:25,118 INFO L226 Difference]: Without dead ends: 105 [2020-10-12 10:31:25,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:31:25,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-12 10:31:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 61. [2020-10-12 10:31:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 10:31:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-10-12 10:31:25,138 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 50 [2020-10-12 10:31:25,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:25,139 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-10-12 10:31:25,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:31:25,139 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-10-12 10:31:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 10:31:25,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:25,142 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-12 10:31:25,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:31:25,143 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:25,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:25,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1471802237, now seen corresponding path program 4 times [2020-10-12 10:31:25,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:25,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567223040] [2020-10-12 10:31:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:25,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:25,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:25,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:25,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 10:31:25,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:25,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-10-12 10:31:25,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:25,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:31:25,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:31:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 10:31:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:26,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:26,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:26,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:26,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:31:26,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:26,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:26,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:26,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 10:31:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:26,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:26,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:26,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:26,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:26,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:31:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:26,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:26,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:26,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:26,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:31:26,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:26,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:26,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:26,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:26,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:31:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:26,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:26,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:26,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:31:26,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:26,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:26,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:26,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:26,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:26,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:26,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:31:26,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:26,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 10:31:26,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567223040] [2020-10-12 10:31:26,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:26,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:31:26,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258126313] [2020-10-12 10:31:26,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:31:26,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:26,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:31:26,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:31:26,228 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 13 states. [2020-10-12 10:31:27,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:27,341 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2020-10-12 10:31:27,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:31:27,342 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-12 10:31:27,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:27,344 INFO L225 Difference]: With dead ends: 109 [2020-10-12 10:31:27,345 INFO L226 Difference]: Without dead ends: 107 [2020-10-12 10:31:27,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:31:27,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-12 10:31:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 88. [2020-10-12 10:31:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 10:31:27,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-10-12 10:31:27,380 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 58 [2020-10-12 10:31:27,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:27,381 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-10-12 10:31:27,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:31:27,381 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-10-12 10:31:27,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 10:31:27,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:27,383 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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 10:31:27,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:31:27,384 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:27,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:27,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1544188795, now seen corresponding path program 1 times [2020-10-12 10:31:27,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:27,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849949114] [2020-10-12 10:31:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:28,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:28,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 10:31:28,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:31:28,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 856 [2020-10-12 10:31:28,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:31:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:31:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 10:31:28,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:28,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:28,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:28,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:28,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:28,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:28,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:28,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:28,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:28,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:28,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:28,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 10:31:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:28,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:28,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:28,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:28,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 10:31:28,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:28,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:31:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:28,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:28,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:28,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:28,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:31:28,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:28,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:31:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:28,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:28,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:28,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:28,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:28,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:31:28,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:28,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:28,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:28,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:28,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:28,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:28,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:28,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:28,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:28,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:28,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:28,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 10:31:28,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849949114] [2020-10-12 10:31:28,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:28,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:31:28,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068378133] [2020-10-12 10:31:28,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:31:28,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:28,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:31:28,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:31:28,579 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 14 states. [2020-10-12 10:31:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:29,361 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2020-10-12 10:31:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 10:31:29,362 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-12 10:31:29,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:29,363 INFO L225 Difference]: With dead ends: 119 [2020-10-12 10:31:29,363 INFO L226 Difference]: Without dead ends: 117 [2020-10-12 10:31:29,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:31:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-12 10:31:29,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 69. [2020-10-12 10:31:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 10:31:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-10-12 10:31:29,381 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 58 [2020-10-12 10:31:29,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:29,382 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-10-12 10:31:29,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:31:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-10-12 10:31:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 10:31:29,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:29,384 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-10-12 10:31:29,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:31:29,384 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:29,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:29,385 INFO L82 PathProgramCache]: Analyzing trace with hash -196856650, now seen corresponding path program 5 times [2020-10-12 10:31:29,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:29,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442260645] [2020-10-12 10:31:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:29,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:30,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:30,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 10:31:30,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:31:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-12 10:31:30,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:31:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 10:31:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 10:31:30,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:31,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:31,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:31,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 10:31:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 10:31:31,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:31:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:31:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:31:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:31:31,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:31:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:31,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:31:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:31:31,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:31,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-12 10:31:31,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442260645] [2020-10-12 10:31:31,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:31,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:31:31,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066561861] [2020-10-12 10:31:31,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:31:31,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:31,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:31:31,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:31:31,356 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 15 states. [2020-10-12 10:31:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:33,544 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2020-10-12 10:31:33,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 10:31:33,545 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-12 10:31:33,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:33,546 INFO L225 Difference]: With dead ends: 171 [2020-10-12 10:31:33,546 INFO L226 Difference]: Without dead ends: 83 [2020-10-12 10:31:33,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=341, Invalid=1299, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 10:31:33,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-12 10:31:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-10-12 10:31:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-12 10:31:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-10-12 10:31:33,565 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 66 [2020-10-12 10:31:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:33,566 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-10-12 10:31:33,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:31:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-10-12 10:31:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-12 10:31:33,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:33,567 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:33,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:31:33,568 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:33,569 INFO L82 PathProgramCache]: Analyzing trace with hash 469602554, now seen corresponding path program 6 times [2020-10-12 10:31:33,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:33,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614719989] [2020-10-12 10:31:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:33,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:33,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:33,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:33,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:33,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:33,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:38,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:38,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 10:31:38,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:31:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 10:31:38,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:31:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:31:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 10:31:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:38,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:38,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:38,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:38,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:39,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:39,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:39,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 10:31:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:39,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:39,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:39,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:39,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:31:39,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:39,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:39,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:31:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:39,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:39,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:39,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:39,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:39,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:39,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:39,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:39,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:31:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:39,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:39,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:39,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:39,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:39,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:39,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:31:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:39,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:39,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:39,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:39,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:39,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:39,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:39,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:39,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:39,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:39,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:39,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:39,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:39,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-12 10:31:39,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614719989] [2020-10-12 10:31:39,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:39,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:31:39,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529478755] [2020-10-12 10:31:39,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:31:39,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:39,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:31:39,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:31:39,061 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 15 states. [2020-10-12 10:31:40,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:40,053 INFO L93 Difference]: Finished difference Result 223 states and 250 transitions. [2020-10-12 10:31:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:31:40,053 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 75 [2020-10-12 10:31:40,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:40,060 INFO L225 Difference]: With dead ends: 223 [2020-10-12 10:31:40,060 INFO L226 Difference]: Without dead ends: 182 [2020-10-12 10:31:40,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:31:40,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-12 10:31:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 103. [2020-10-12 10:31:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 10:31:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2020-10-12 10:31:40,091 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 75 [2020-10-12 10:31:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:40,091 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2020-10-12 10:31:40,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:31:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2020-10-12 10:31:40,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-12 10:31:40,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:40,097 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:40,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:31:40,099 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:40,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:40,099 INFO L82 PathProgramCache]: Analyzing trace with hash 893249276, now seen corresponding path program 2 times [2020-10-12 10:31:40,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:40,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947683501] [2020-10-12 10:31:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:40,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:40,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:40,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:41,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:44,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:45,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:45,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 10:31:45,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:31:45,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 10:31:45,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:31:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:31:45,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 10:31:45,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:45,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:45,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:45,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:45,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:45,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:45,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:45,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:45,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 10:31:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:45,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:45,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:45,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:45,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:45,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:31:45,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:45,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:45,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:45,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:45,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:45,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:31:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:45,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:45,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:45,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:45,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:45,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:45,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:31:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:45,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:45,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:45,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:45,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:45,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:45,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:31:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:45,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:45,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:45,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:45,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:45,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:45,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:45,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:45,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:45,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:45,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:45,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:45,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:45,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:45,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-12 10:31:45,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947683501] [2020-10-12 10:31:45,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:45,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:31:45,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992833551] [2020-10-12 10:31:45,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:31:45,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:45,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:31:45,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:31:45,696 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand 15 states. [2020-10-12 10:31:46,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:46,476 INFO L93 Difference]: Finished difference Result 237 states and 285 transitions. [2020-10-12 10:31:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 10:31:46,477 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 75 [2020-10-12 10:31:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:46,479 INFO L225 Difference]: With dead ends: 237 [2020-10-12 10:31:46,479 INFO L226 Difference]: Without dead ends: 196 [2020-10-12 10:31:46,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:31:46,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-12 10:31:46,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 129. [2020-10-12 10:31:46,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 10:31:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2020-10-12 10:31:46,501 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 75 [2020-10-12 10:31:46,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:46,502 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2020-10-12 10:31:46,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:31:46,502 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2020-10-12 10:31:46,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-12 10:31:46,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:46,504 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 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] [2020-10-12 10:31:46,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:31:46,504 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:46,505 INFO L82 PathProgramCache]: Analyzing trace with hash -4144002, now seen corresponding path program 1 times [2020-10-12 10:31:46,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:46,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597533767] [2020-10-12 10:31:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:46,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:51,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:51,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 10:31:51,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:31:51,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:31:51,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:31:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 10:31:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 10:31:51,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:51,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:51,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:51,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:51,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:51,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:51,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 10:31:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:51,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:51,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:51,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:51,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:51,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:51,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:51,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:51,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:31:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:51,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:51,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:51,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:51,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:31:51,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:51,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:31:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:51,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:51,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:51,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:51,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:51,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:51,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:51,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:31:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:51,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:51,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:51,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:51,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:51,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:51,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:51,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:51,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:51,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:51,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:51,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:51,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:51,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 10:31:51,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597533767] [2020-10-12 10:31:51,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:51,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:31:51,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618838095] [2020-10-12 10:31:51,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:31:51,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:51,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:31:51,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:31:51,812 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand 16 states. [2020-10-12 10:31:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:52,991 INFO L93 Difference]: Finished difference Result 290 states and 369 transitions. [2020-10-12 10:31:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 10:31:52,992 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 75 [2020-10-12 10:31:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:52,995 INFO L225 Difference]: With dead ends: 290 [2020-10-12 10:31:52,995 INFO L226 Difference]: Without dead ends: 288 [2020-10-12 10:31:52,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 10:31:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-12 10:31:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 137. [2020-10-12 10:31:53,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-12 10:31:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 164 transitions. [2020-10-12 10:31:53,013 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 164 transitions. Word has length 75 [2020-10-12 10:31:53,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:53,014 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 164 transitions. [2020-10-12 10:31:53,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:31:53,014 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 164 transitions. [2020-10-12 10:31:53,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 10:31:53,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:53,015 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 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] [2020-10-12 10:31:53,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:31:53,015 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:53,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:53,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1488501169, now seen corresponding path program 2 times [2020-10-12 10:31:53,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:53,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566709805] [2020-10-12 10:31:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:53,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:53,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:53,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:53,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:55,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:58,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 10:31:58,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:31:58,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 10:31:58,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:31:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:31:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 10:31:58,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:58,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:58,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:58,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:58,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:58,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:58,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:58,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:58,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:58,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 10:31:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:58,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:58,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:58,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:31:58,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:31:58,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:58,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:31:58,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:58,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:31:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:58,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:58,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:58,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:58,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:58,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:31:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:58,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:58,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:58,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:58,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:31:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:58,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:58,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:58,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:58,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:58,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:58,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:58,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:58,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:58,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:58,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:58,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:31:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:58,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:58,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:58,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 40 proven. 14 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 10:31:58,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566709805] [2020-10-12 10:31:58,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:58,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:31:58,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152949225] [2020-10-12 10:31:58,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:31:58,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:58,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:31:58,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:31:58,415 INFO L87 Difference]: Start difference. First operand 137 states and 164 transitions. Second operand 14 states. [2020-10-12 10:31:58,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:58,906 INFO L93 Difference]: Finished difference Result 203 states and 237 transitions. [2020-10-12 10:31:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:31:58,908 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-12 10:31:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:58,909 INFO L225 Difference]: With dead ends: 203 [2020-10-12 10:31:58,909 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 10:31:58,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:31:58,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 10:31:58,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2020-10-12 10:31:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 10:31:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-10-12 10:31:58,923 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 83 [2020-10-12 10:31:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:58,923 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-10-12 10:31:58,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:31:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-10-12 10:31:58,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 10:31:58,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:58,924 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:58,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 10:31:58,925 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:58,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:58,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1771666353, now seen corresponding path program 7 times [2020-10-12 10:31:58,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:58,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474587425] [2020-10-12 10:31:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:02,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:03,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:03,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 10:32:03,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 10:32:03,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 10:32:03,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 10:32:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:32:03,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 10:32:03,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:05,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:05,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:05,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:05,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:05,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:05,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:05,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:05,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 10:32:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:05,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:05,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:05,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:32:05,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:05,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:05,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:05,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 10:32:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:05,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:05,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:05,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:05,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:05,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:05,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:05,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:05,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:05,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:05,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 10:32:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:05,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:05,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:05,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:05,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:05,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:05,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:32:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:05,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:05,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:05,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:05,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:32:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:05,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:05,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:05,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:05,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 10:32:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:05,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:05,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:05,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:05,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:05,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:05,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:05,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:05,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:05,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:05,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 45 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-12 10:32:05,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474587425] [2020-10-12 10:32:05,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:05,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 10:32:05,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296110601] [2020-10-12 10:32:05,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 10:32:05,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:05,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 10:32:05,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:32:05,112 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 23 states. [2020-10-12 10:32:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:06,787 INFO L93 Difference]: Finished difference Result 188 states and 207 transitions. [2020-10-12 10:32:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 10:32:06,787 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 85 [2020-10-12 10:32:06,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:06,788 INFO L225 Difference]: With dead ends: 188 [2020-10-12 10:32:06,788 INFO L226 Difference]: Without dead ends: 91 [2020-10-12 10:32:06,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=263, Invalid=1219, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 10:32:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-12 10:32:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-12 10:32:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-12 10:32:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-10-12 10:32:06,805 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 85 [2020-10-12 10:32:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:06,806 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-10-12 10:32:06,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 10:32:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-10-12 10:32:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 10:32:06,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:06,807 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:06,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 10:32:06,807 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:06,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:06,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1051214351, now seen corresponding path program 8 times [2020-10-12 10:32:06,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:06,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333573752] [2020-10-12 10:32:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:06,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:06,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:09,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:09,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:09,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:11,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:11,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 10:32:11,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 10:32:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 10:32:11,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 10:32:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:32:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 10:32:11,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:12,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:12,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:12,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:12,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:12,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:12,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:12,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:12,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 10:32:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:12,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:12,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:12,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:12,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:32:12,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:12,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:12,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:12,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:12,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:32:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:12,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:12,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:12,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:12,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:12,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:12,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:12,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:12,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:12,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:32:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:12,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:12,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:12,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:32:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:12,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:12,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:12,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:12,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:12,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:12,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:12,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:12,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:12,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:32:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:12,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:12,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:12,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:12,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:12,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:12,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:32:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:12,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:13,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:13,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:13,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 45 proven. 43 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-12 10:32:13,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333573752] [2020-10-12 10:32:13,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:13,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 10:32:13,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463761109] [2020-10-12 10:32:13,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 10:32:13,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:13,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 10:32:13,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:32:13,036 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 25 states. [2020-10-12 10:32:15,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:15,618 INFO L93 Difference]: Finished difference Result 267 states and 314 transitions. [2020-10-12 10:32:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-12 10:32:15,620 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 87 [2020-10-12 10:32:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:15,621 INFO L225 Difference]: With dead ends: 267 [2020-10-12 10:32:15,622 INFO L226 Difference]: Without dead ends: 190 [2020-10-12 10:32:15,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=723, Invalid=2583, Unknown=0, NotChecked=0, Total=3306 [2020-10-12 10:32:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-12 10:32:15,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 123. [2020-10-12 10:32:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-12 10:32:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2020-10-12 10:32:15,640 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 87 [2020-10-12 10:32:15,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:15,640 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2020-10-12 10:32:15,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 10:32:15,641 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2020-10-12 10:32:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 10:32:15,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:15,642 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:15,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 10:32:15,642 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:15,643 INFO L82 PathProgramCache]: Analyzing trace with hash -186575085, now seen corresponding path program 9 times [2020-10-12 10:32:15,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:15,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458445072] [2020-10-12 10:32:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:15,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:15,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:16,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 10:32:18,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:32:18,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3279 [2020-10-12 10:32:18,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 10:32:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:32:18,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 10:32:18,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:20,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:20,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:20,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:20,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:20,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:20,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:20,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:20,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 10:32:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:20,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:20,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:20,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:32:20,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:20,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:20,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:20,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:20,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:20,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:32:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:20,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:20,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:20,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:32:20,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:20,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:20,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 10:32:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:20,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:20,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:20,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:20,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:32:20,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:20,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:20,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:20,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:20,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:20,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:32:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:20,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:20,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:32:20,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:32:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:20,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:20,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:20,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:20,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:32:20,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:20,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:20,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:20,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:20,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:20,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 10:32:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:20,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:20,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:20,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:32:20,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:21,021 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 50 proven. 64 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-12 10:32:21,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458445072] [2020-10-12 10:32:21,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:21,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 10:32:21,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626191776] [2020-10-12 10:32:21,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 10:32:21,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:21,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 10:32:21,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:32:21,024 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand 28 states. [2020-10-12 10:32:21,593 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-10-12 10:32:22,149 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2020-10-12 10:32:23,081 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-10-12 10:32:23,968 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2020-10-12 10:32:24,325 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-12 10:32:25,796 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-10-12 10:32:26,136 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-10-12 10:32:26,288 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2020-10-12 10:32:26,512 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-12 10:32:26,824 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-12 10:32:27,571 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-12 10:32:27,911 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2020-10-12 10:32:28,218 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 17 [2020-10-12 10:32:28,482 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-10-12 10:32:29,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:29,489 INFO L93 Difference]: Finished difference Result 354 states and 413 transitions. [2020-10-12 10:32:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-12 10:32:29,490 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 89 [2020-10-12 10:32:29,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:29,492 INFO L225 Difference]: With dead ends: 354 [2020-10-12 10:32:29,493 INFO L226 Difference]: Without dead ends: 172 [2020-10-12 10:32:29,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1818 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1207, Invalid=5113, Unknown=0, NotChecked=0, Total=6320 [2020-10-12 10:32:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-12 10:32:29,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 117. [2020-10-12 10:32:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-12 10:32:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2020-10-12 10:32:29,515 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 89 [2020-10-12 10:32:29,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:29,515 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2020-10-12 10:32:29,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 10:32:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2020-10-12 10:32:29,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 10:32:29,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:29,516 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:29,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 10:32:29,517 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash -202093803, now seen corresponding path program 3 times [2020-10-12 10:32:29,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:29,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165933135] [2020-10-12 10:32:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:29,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:33,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:33,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 10:32:33,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:32:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3568 [2020-10-12 10:32:33,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 10:32:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:32:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 10:32:33,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:33,779 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-12 10:32:34,026 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-10-12 10:32:34,275 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2020-10-12 10:32:34,564 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2020-10-12 10:32:34,780 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2020-10-12 10:32:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:35,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:35,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:35,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:35,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:35,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:35,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:35,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 10:32:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:35,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:35,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:35,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:35,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:35,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:32:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:35,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:35,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:35,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:35,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:32:35,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:35,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:35,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:35,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:35,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 10:32:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:35,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:32:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:35,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:35,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:32:35,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:32:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:35,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:35,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:35,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:35,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:32:35,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:35,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 10:32:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:35,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:35,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:35,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:35,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:32:35,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:35,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:35,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:35,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:35,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 50 proven. 64 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-12 10:32:35,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165933135] [2020-10-12 10:32:35,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:35,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 10:32:35,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344093982] [2020-10-12 10:32:35,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 10:32:35,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:35,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 10:32:35,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2020-10-12 10:32:35,926 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand 29 states. [2020-10-12 10:32:37,270 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2020-10-12 10:32:37,678 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2020-10-12 10:32:38,230 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-10-12 10:32:39,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:39,880 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2020-10-12 10:32:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 10:32:39,881 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 89 [2020-10-12 10:32:39,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:39,882 INFO L225 Difference]: With dead ends: 156 [2020-10-12 10:32:39,882 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 10:32:39,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=573, Invalid=2619, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 10:32:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 10:32:39,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2020-10-12 10:32:39,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 10:32:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2020-10-12 10:32:39,893 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 89 [2020-10-12 10:32:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:39,894 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2020-10-12 10:32:39,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 10:32:39,894 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2020-10-12 10:32:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 10:32:39,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:39,895 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:39,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 10:32:39,895 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:39,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1803071413, now seen corresponding path program 10 times [2020-10-12 10:32:39,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:39,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547057763] [2020-10-12 10:32:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:39,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:40,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:44,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:44,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 10:32:44,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:32:44,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 10:32:44,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:32:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:32:44,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 10:32:44,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:45,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:45,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:45,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:45,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:45,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:45,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:45,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 10:32:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:45,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:32:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:45,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:45,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:32:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:45,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:45,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:45,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:45,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:45,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:45,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:45,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:32:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:45,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:45,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:45,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:45,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:45,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:45,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:45,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:45,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:32:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:45,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:45,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:45,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:45,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:45,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:32:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:45,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:45,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:45,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:45,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:45,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:45,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:32:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:45,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:45,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:45,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:45,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:45,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 46 proven. 31 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 10:32:45,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547057763] [2020-10-12 10:32:45,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:45,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:32:45,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121813991] [2020-10-12 10:32:45,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:32:45,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:45,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:32:45,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:32:45,211 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand 18 states. [2020-10-12 10:32:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:46,457 INFO L93 Difference]: Finished difference Result 164 states and 181 transitions. [2020-10-12 10:32:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 10:32:46,458 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 91 [2020-10-12 10:32:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:46,460 INFO L225 Difference]: With dead ends: 164 [2020-10-12 10:32:46,460 INFO L226 Difference]: Without dead ends: 115 [2020-10-12 10:32:46,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=269, Invalid=1063, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 10:32:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-12 10:32:46,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2020-10-12 10:32:46,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 10:32:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-10-12 10:32:46,474 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 91 [2020-10-12 10:32:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:46,474 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-10-12 10:32:46,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:32:46,474 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-10-12 10:32:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 10:32:46,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:46,475 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:46,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 10:32:46,475 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:46,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:46,476 INFO L82 PathProgramCache]: Analyzing trace with hash 496293405, now seen corresponding path program 11 times [2020-10-12 10:32:46,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:46,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290676927] [2020-10-12 10:32:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:46,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:47,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:48,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:50,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:51,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:51,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 10:32:51,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 10:32:51,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 10:32:51,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 10:32:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:32:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 10:32:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:51,949 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-10-12 10:32:52,085 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-10-12 10:32:52,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:52,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:52,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:52,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:52,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:52,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 10:32:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:52,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:52,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:52,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:52,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:32:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:52,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:52,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:52,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:52,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:52,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:52,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:32:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:52,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:52,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:52,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:52,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:52,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:52,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:52,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:53,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 10:32:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:53,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:53,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:53,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:53,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:53,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:53,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:53,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 10:32:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:53,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:53,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:53,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:53,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:53,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:53,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:53,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 10:32:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:53,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:53,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:53,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:32:53,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:32:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 10 proven. 83 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 10:32:53,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290676927] [2020-10-12 10:32:53,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:53,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 10:32:53,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457536794] [2020-10-12 10:32:53,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 10:32:53,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:53,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 10:32:53,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:32:53,033 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 25 states. [2020-10-12 10:32:53,269 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-10-12 10:32:53,769 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-12 10:32:55,020 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-12 10:32:55,294 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-10-12 10:32:55,442 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-10-12 10:32:56,599 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-10-12 10:32:56,739 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-12 10:32:57,057 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-12 10:32:57,217 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2020-10-12 10:32:57,662 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-10-12 10:32:57,900 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2020-10-12 10:32:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:59,183 INFO L93 Difference]: Finished difference Result 312 states and 357 transitions. [2020-10-12 10:32:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-12 10:32:59,184 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-10-12 10:32:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:59,187 INFO L225 Difference]: With dead ends: 312 [2020-10-12 10:32:59,187 INFO L226 Difference]: Without dead ends: 263 [2020-10-12 10:32:59,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=940, Invalid=3616, Unknown=0, NotChecked=0, Total=4556 [2020-10-12 10:32:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-12 10:32:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 156. [2020-10-12 10:32:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-12 10:32:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 188 transitions. [2020-10-12 10:32:59,211 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 188 transitions. Word has length 96 [2020-10-12 10:32:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:59,211 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 188 transitions. [2020-10-12 10:32:59,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 10:32:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 188 transitions. [2020-10-12 10:32:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 10:32:59,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:59,213 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:59,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 10:32:59,213 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:59,213 INFO L82 PathProgramCache]: Analyzing trace with hash 480774687, now seen corresponding path program 4 times [2020-10-12 10:32:59,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:59,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422790547] [2020-10-12 10:32:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:59,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:59,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:59,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:59,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:59,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:59,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:00,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:00,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:02,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:04,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:04,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 10:33:04,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-12 10:33:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 10:33:04,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 10:33:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:33:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 10:33:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:05,657 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 53 [2020-10-12 10:33:05,863 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2020-10-12 10:33:06,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:33:06,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:06,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 10:33:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:06,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:33:06,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:33:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:33:06,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:33:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:06,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:06,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:06,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:33:06,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:06,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:33:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:06,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:06,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:33:06,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:06,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 10:33:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:06,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:06,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:06,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:33:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 10:33:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:06,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:06,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:06,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:33:06,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:06,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 10:33:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:06,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:06,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:06,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:06,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:06,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:33:06,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:06,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:06,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:33:06,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:06,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 10 proven. 83 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 10:33:06,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422790547] [2020-10-12 10:33:06,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:06,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 10:33:06,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373580390] [2020-10-12 10:33:06,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 10:33:06,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:06,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 10:33:06,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2020-10-12 10:33:06,861 INFO L87 Difference]: Start difference. First operand 156 states and 188 transitions. Second operand 27 states. [2020-10-12 10:33:07,339 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-12 10:33:07,520 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-12 10:33:08,679 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-10-12 10:33:08,829 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-12 10:33:08,975 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-12 10:33:09,112 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-12 10:33:09,377 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-10-12 10:33:09,706 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-10-12 10:33:09,989 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-12 10:33:10,363 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-10-12 10:33:10,531 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2020-10-12 10:33:10,671 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-12 10:33:10,835 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-10-12 10:33:11,211 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-12 10:33:11,741 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-10-12 10:33:11,882 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2020-10-12 10:33:12,196 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-12 10:33:12,718 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-10-12 10:33:12,908 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-10-12 10:33:13,282 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-12 10:33:13,795 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2020-10-12 10:33:14,001 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-12 10:33:14,169 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-12 10:33:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:33:15,301 INFO L93 Difference]: Finished difference Result 484 states and 629 transitions. [2020-10-12 10:33:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-12 10:33:15,305 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 96 [2020-10-12 10:33:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:33:15,307 INFO L225 Difference]: With dead ends: 484 [2020-10-12 10:33:15,307 INFO L226 Difference]: Without dead ends: 435 [2020-10-12 10:33:15,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1291, Invalid=4871, Unknown=0, NotChecked=0, Total=6162 [2020-10-12 10:33:15,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-12 10:33:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 278. [2020-10-12 10:33:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-12 10:33:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 364 transitions. [2020-10-12 10:33:15,346 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 364 transitions. Word has length 96 [2020-10-12 10:33:15,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:33:15,346 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 364 transitions. [2020-10-12 10:33:15,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 10:33:15,346 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 364 transitions. [2020-10-12 10:33:15,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 10:33:15,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:33:15,348 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:33:15,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 10:33:15,348 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:33:15,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:33:15,349 INFO L82 PathProgramCache]: Analyzing trace with hash -834624709, now seen corresponding path program 12 times [2020-10-12 10:33:15,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:33:15,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745718850] [2020-10-12 10:33:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:33:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:15,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:15,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:17,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:20,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:20,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 10:33:20,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:33:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 10:33:20,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 10:33:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:33:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 10:33:20,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:21,437 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-10-12 10:33:21,640 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-12 10:33:21,922 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-12 10:33:22,098 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 37 [2020-10-12 10:33:22,348 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 39 [2020-10-12 10:33:24,431 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~SIZE~0 1))) (and (or (<= c_main_~i~0 2) (<= 3 c_main_~i~0)) (or (<= 2 c_~SIZE~0) (< 0 .cse0)) (let ((.cse1 (* 8 c_main_~i~0)) (.cse3 (store (select |c_#memory_int| c_main_~a~0.base) (+ (* c_main_~i~0 8) c_main_~a~0.offset (- 8)) (+ (* c_main_~i~0 2) (- 2))))) (let ((.cse8 (and (not (= 24 .cse1)) (<= (select .cse3 (+ c_main_~a~0.offset 20)) 5)))) (or (<= .cse0 0) (and (= c_main_~a~0.offset 0) (let ((.cse6 (div c_~SIZE~0 2))) (let ((.cse4 (* 2 .cse6)) (.cse12 (<= c_main_~i~0 3))) (or (let ((.cse2 (div (+ (* .cse6 8) c_main_~a~0.offset (* c_~SIZE~0 (- 4)) (- 21)) 4))) (let ((.cse5 (+ .cse4 .cse2 6))) (and (or (and (not (= 0 (+ .cse1 (* 4 .cse2)))) (<= (+ (select .cse3 (+ (* .cse2 (- 4)) c_main_~a~0.offset (- 4))) c_~SIZE~0) (+ .cse4 5))) (< c_~SIZE~0 .cse5)) (<= c_~SIZE~0 .cse5)))) (let ((.cse7 (+ (div (+ c_main_~a~0.offset (- 24)) 4) 6))) (and (<= .cse7 0) (or (< .cse7 0) .cse8))) (let ((.cse11 (= c_~SIZE~0 .cse4))) (and (or (let ((.cse10 (+ .cse1 c_main_~a~0.offset)) (.cse9 (+ (* 4 c_~SIZE~0) 12))) (and (<= .cse9 .cse10) (<= .cse10 .cse9))) (not .cse11)) (or (<= c_~SIZE~0 .cse4) .cse12 .cse11 .cse8))) .cse12 .cse8)))) .cse8))))) is different from false [2020-10-12 10:33:25,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:33:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:25,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:33:25,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:25,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:33:25,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:33:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:33:25,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 10:33:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:25,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:25,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:25,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:25,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:25,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:25,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:25,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:33:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:25,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:25,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:25,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:25,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:25,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:33:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:25,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:25,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:25,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:25,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:25,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:25,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:33:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:25,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:25,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:25,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:25,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:25,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:25,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:25,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:33:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:25,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:25,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:25,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:25,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:25,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:33:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:33:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:33:25,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:33:25,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:33:25,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:33:25,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:33:25,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:33:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:33:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:33:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:33:25,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:33:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 10 proven. 141 refuted. 0 times theorem prover too weak. 40 trivial. 7 not checked. [2020-10-12 10:33:26,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745718850] [2020-10-12 10:33:26,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:33:26,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 10:33:26,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325677535] [2020-10-12 10:33:26,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 10:33:26,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:33:26,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 10:33:26,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=865, Unknown=1, NotChecked=60, Total=1056 [2020-10-12 10:33:26,023 INFO L87 Difference]: Start difference. First operand 278 states and 364 transitions. Second operand 33 states. [2020-10-12 10:33:26,783 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-12 10:33:28,192 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 23 [2020-10-12 10:33:28,965 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 39 [2020-10-12 10:33:29,159 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 33 [2020-10-12 10:33:29,346 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 34 [2020-10-12 10:33:29,883 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 64 [2020-10-12 10:33:30,569 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 75 [2020-10-12 10:33:31,156 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 66 [2020-10-12 10:33:32,036 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 76 [2020-10-12 10:33:32,869 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 66 [2020-10-12 10:33:33,081 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-12 10:33:33,887 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2020-10-12 10:33:34,799 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 66 [2020-10-12 10:33:35,178 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 54 [2020-10-12 10:33:35,429 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-12 10:33:35,927 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 49 [2020-10-12 10:33:36,402 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-10-12 10:33:37,552 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2020-10-12 10:33:37,859 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-12 10:33:38,141 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-12 10:33:38,728 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 61 [2020-10-12 10:33:39,436 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2020-10-12 10:33:40,467 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 60 [2020-10-12 10:33:41,255 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 56 [2020-10-12 10:33:41,613 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-12 10:33:42,425 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 60 [2020-10-12 10:33:42,724 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2020-10-12 10:33:43,757 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2020-10-12 10:33:44,205 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-12 10:33:44,790 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 55 [2020-10-12 10:33:45,244 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-12 10:33:46,607 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2020-10-12 10:33:47,106 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2020-10-12 10:33:47,858 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2020-10-12 10:33:48,033 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-12 10:33:48,795 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 60 [2020-10-12 10:33:49,616 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 56 [2020-10-12 10:33:49,996 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-12 10:33:50,795 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 60 [2020-10-12 10:33:51,056 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-10-12 10:33:51,970 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-10-12 10:33:52,453 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-12 10:33:53,065 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 55 [2020-10-12 10:33:53,341 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2020-10-12 10:33:53,774 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-12 10:33:55,366 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2020-10-12 10:33:55,929 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2020-10-12 10:33:56,875 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2020-10-12 10:33:57,387 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2020-10-12 10:33:58,287 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 59 [2020-10-12 10:33:59,270 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 55 [2020-10-12 10:33:59,898 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 42 [2020-10-12 10:34:01,032 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2020-10-12 10:34:01,580 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 35 [2020-10-12 10:34:02,510 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 53 [2020-10-12 10:34:03,016 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 51 [2020-10-12 10:34:03,766 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 52 [2020-10-12 10:34:04,536 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 48 [2020-10-12 10:34:05,223 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 35 [2020-10-12 10:34:06,126 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 41 [2020-10-12 10:34:07,376 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 47 [2020-10-12 10:34:07,921 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 48 [2020-10-12 10:34:09,247 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 45 [2020-10-12 10:34:09,967 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 41 [2020-10-12 10:34:10,316 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-10-12 10:34:11,044 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 46 [2020-10-12 10:34:11,372 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 29 [2020-10-12 10:34:12,216 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2020-10-12 10:34:13,041 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 41 [2020-10-12 10:34:14,568 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2020-10-12 10:34:15,057 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2020-10-12 10:34:15,842 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2020-10-12 10:34:16,788 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-12 10:34:21,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:21,848 INFO L93 Difference]: Finished difference Result 1587 states and 2197 transitions. [2020-10-12 10:34:21,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-10-12 10:34:21,850 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 98 [2020-10-12 10:34:21,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:21,859 INFO L225 Difference]: With dead ends: 1587 [2020-10-12 10:34:21,859 INFO L226 Difference]: Without dead ends: 1585 [2020-10-12 10:34:21,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 17 SyntacticMatches, 17 SemanticMatches, 172 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11907 ImplicationChecksByTransitivity, 53.0s TimeCoverageRelationStatistics Valid=3836, Invalid=25923, Unknown=1, NotChecked=342, Total=30102 [2020-10-12 10:34:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2020-10-12 10:34:21,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 795. [2020-10-12 10:34:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-10-12 10:34:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1114 transitions. [2020-10-12 10:34:21,988 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1114 transitions. Word has length 98 [2020-10-12 10:34:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:21,988 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1114 transitions. [2020-10-12 10:34:21,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 10:34:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1114 transitions. [2020-10-12 10:34:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 10:34:21,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:21,992 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:21,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 10:34:21,992 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:21,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:21,993 INFO L82 PathProgramCache]: Analyzing trace with hash 41394297, now seen corresponding path program 5 times [2020-10-12 10:34:21,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:21,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488288159] [2020-10-12 10:34:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:22,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:27,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:27,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 10:34:27,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:34:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 10:34:27,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 10:34:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:34:27,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 10:34:27,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:28,336 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-10-12 10:34:28,635 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-10-12 10:34:28,829 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2020-10-12 10:34:29,112 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-12 10:34:29,456 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-10-12 10:34:29,951 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-12 10:34:30,650 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2020-10-12 10:34:31,419 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 16 [2020-10-12 10:34:31,709 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-10-12 10:34:32,000 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-10-12 10:34:32,225 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-10-12 10:34:32,542 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2020-10-12 10:34:32,762 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2020-10-12 10:34:33,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:34:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:33,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:33,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:34:33,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:33,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:34:33,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:34:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:33,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:34:33,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:33,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 10:34:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:33,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:33,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:33,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:34:33,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:33,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:34:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:33,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:33,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:34:33,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:33,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:33,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:34:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:33,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:33,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:33,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:34:33,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:33,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:33,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:33,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:33,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:33,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:34:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:33,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:33,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:33,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:33,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:34:33,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:33,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:33,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:33,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:33,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:33,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:34:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:33,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:33,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:33,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:34:33,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:33,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:33,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:33,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:34:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:33,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:34:33,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:34:33,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:34:33,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:34:33,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:34:33,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:34:33,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:34:33,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:34:33,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:34:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 10 proven. 147 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-12 10:34:33,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488288159] [2020-10-12 10:34:33,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:34:33,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 10:34:33,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782872645] [2020-10-12 10:34:33,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 10:34:33,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:34:33,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 10:34:33,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2020-10-12 10:34:33,368 INFO L87 Difference]: Start difference. First operand 795 states and 1114 transitions. Second operand 32 states. [2020-10-12 10:34:34,455 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2020-10-12 10:34:35,059 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-12 10:34:35,495 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-12 10:34:36,632 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 33 [2020-10-12 10:34:36,852 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 30 [2020-10-12 10:34:37,207 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2020-10-12 10:34:37,428 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-10-12 10:34:38,072 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-10-12 10:34:38,313 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2020-10-12 10:34:38,950 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2020-10-12 10:34:39,506 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2020-10-12 10:34:39,891 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 50 [2020-10-12 10:34:40,183 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 50 [2020-10-12 10:34:40,485 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 33 [2020-10-12 10:34:40,948 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 35 [2020-10-12 10:34:41,519 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 45 [2020-10-12 10:34:42,098 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-10-12 10:34:42,527 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 50 [2020-10-12 10:34:43,069 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2020-10-12 10:34:43,304 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2020-10-12 10:34:43,640 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-12 10:34:44,107 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-10-12 10:34:44,706 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 50 [2020-10-12 10:34:45,288 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 55 [2020-10-12 10:34:45,876 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 59 [2020-10-12 10:34:46,281 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-12 10:34:46,772 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-12 10:34:47,883 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2020-10-12 10:34:48,123 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-12 10:34:48,726 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-12 10:34:50,054 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2020-10-12 10:34:50,886 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-10-12 10:34:51,970 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-12 10:34:52,940 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-10-12 10:34:56,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:34:56,733 INFO L93 Difference]: Finished difference Result 1231 states and 1690 transitions. [2020-10-12 10:34:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-12 10:34:56,735 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 98 [2020-10-12 10:34:56,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:34:56,742 INFO L225 Difference]: With dead ends: 1231 [2020-10-12 10:34:56,742 INFO L226 Difference]: Without dead ends: 1229 [2020-10-12 10:34:56,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3230 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=1489, Invalid=9431, Unknown=0, NotChecked=0, Total=10920 [2020-10-12 10:34:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-10-12 10:34:56,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 974. [2020-10-12 10:34:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 974 states. [2020-10-12 10:34:56,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1349 transitions. [2020-10-12 10:34:56,901 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1349 transitions. Word has length 98 [2020-10-12 10:34:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:34:56,902 INFO L479 AbstractCegarLoop]: Abstraction has 974 states and 1349 transitions. [2020-10-12 10:34:56,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 10:34:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1349 transitions. [2020-10-12 10:34:56,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 10:34:56,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:56,906 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:56,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 10:34:56,906 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:56,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:56,906 INFO L82 PathProgramCache]: Analyzing trace with hash 25875579, now seen corresponding path program 6 times [2020-10-12 10:34:56,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:56,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46709346] [2020-10-12 10:34:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:56,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:57,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:57,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:58,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking...