/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 SingleStatement --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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:19:16,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:19:16,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:19:16,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:19:16,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:19:16,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:19:16,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:19:16,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:19:16,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:19:16,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:19:16,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:19:16,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:19:16,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:19:16,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:19:16,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:19:16,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:19:16,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:19:16,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:19:16,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:19:16,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:19:16,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:19:16,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:19:16,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:19:16,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:19:16,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:19:16,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:19:16,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:19:16,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:19:16,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:19:16,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:19:16,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:19:16,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:19:16,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:19:16,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:19:16,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:19:16,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:19:16,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:19:16,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:19:16,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:19:16,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:19:16,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:19:16,538 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 [2020-09-24 17:19:16,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:19:16,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:19:16,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:19:16,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:19:16,589 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:19:16,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:19:16,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:19:16,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:19:16,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:19:16,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:19:16,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:19:16,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:19:16,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:19:16,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:19:16,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:19:16,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:19:16,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:19:16,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:19:16,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:19:16,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:19:16,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:19:16,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:19:16,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:19:16,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:19:16,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:19:16,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:19:16,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:19:16,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:19:16,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:19:16,596 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 -> SingleStatement 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;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:19:17,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:19:17,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:19:17,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:19:17,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:19:17,105 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:19:17,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-24 17:19:17,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2105cae2/037fb1d8efa24b868a963bd650f3728b/FLAG2d473beda [2020-09-24 17:19:17,754 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:19:17,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-24 17:19:17,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2105cae2/037fb1d8efa24b868a963bd650f3728b/FLAG2d473beda [2020-09-24 17:19:18,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2105cae2/037fb1d8efa24b868a963bd650f3728b [2020-09-24 17:19:18,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:19:18,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:19:18,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:19:18,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:19:18,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:19:18,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:19:18" (1/1) ... [2020-09-24 17:19:18,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa297b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:18, skipping insertion in model container [2020-09-24 17:19:18,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:19:18" (1/1) ... [2020-09-24 17:19:18,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:19:18,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:19:18,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:19:18,482 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:19:18,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:19:18,551 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:19:18,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:18 WrapperNode [2020-09-24 17:19:18,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:19:18,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:19:18,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:19:18,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:19:18,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:18" (1/1) ... [2020-09-24 17:19:18,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:18" (1/1) ... [2020-09-24 17:19:18,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:18" (1/1) ... [2020-09-24 17:19:18,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:18" (1/1) ... [2020-09-24 17:19:18,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:18" (1/1) ... [2020-09-24 17:19:18,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:18" (1/1) ... [2020-09-24 17:19:18,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:18" (1/1) ... [2020-09-24 17:19:18,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:19:18,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:19:18,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:19:18,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:19:18,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:18" (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 [2020-09-24 17:19:18,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:19:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:19:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:19:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:19:18,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:19:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:19:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:19:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:19:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:19:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:19:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:19:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:19:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:19:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:19:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:19:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:19:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:19:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:19:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:19:19,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:19:19,122 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 17:19:19,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:19:19 BoogieIcfgContainer [2020-09-24 17:19:19,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:19:19,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:19:19,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:19:19,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:19:19,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:19:18" (1/3) ... [2020-09-24 17:19:19,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7f9358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:19:19, skipping insertion in model container [2020-09-24 17:19:19,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:18" (2/3) ... [2020-09-24 17:19:19,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7f9358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:19:19, skipping insertion in model container [2020-09-24 17:19:19,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:19:19" (3/3) ... [2020-09-24 17:19:19,139 INFO L109 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-09-24 17:19:19,162 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:19:19,182 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:19:19,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:19:19,235 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:19:19,235 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:19:19,236 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:19:19,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:19:19,236 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:19:19,236 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:19:19,236 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:19:19,236 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:19:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 17:19:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 17:19:19,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:19:19,273 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, 1] [2020-09-24 17:19:19,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:19:19,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:19:19,281 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-24 17:19:19,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:19:19,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507454460] [2020-09-24 17:19:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:19:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:19,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:19,872 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:19,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:19:19,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:19:19,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-09-24 17:19:19,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 17:19:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:19:19,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:19:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:20,017 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:20,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:19:20,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:20,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:19:20,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:20,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:20,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:20,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:19:20,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:19:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:20,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:20,055 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:20,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:19:20,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:20,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:19:20,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:19:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:19:20,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507454460] [2020-09-24 17:19:20,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:19:20,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:19:20,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379075432] [2020-09-24 17:19:20,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:19:20,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:19:20,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:19:20,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:19:20,102 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-24 17:19:20,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:19:20,262 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-09-24 17:19:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:19:20,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-24 17:19:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:19:20,276 INFO L225 Difference]: With dead ends: 101 [2020-09-24 17:19:20,276 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 17:19:20,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:19:20,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 17:19:20,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-24 17:19:20,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 17:19:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-24 17:19:20,330 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-24 17:19:20,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:19:20,331 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-24 17:19:20,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:19:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-24 17:19:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 17:19:20,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:19:20,333 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, 1] [2020-09-24 17:19:20,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:19:20,334 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:19:20,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:19:20,335 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-24 17:19:20,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:19:20,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20117822] [2020-09-24 17:19:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:19:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:20,752 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:20,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 17:19:20,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:19:20,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-24 17:19:20,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:20,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:19:20,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:19:20,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:19:20,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:19:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:19:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:20,830 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:20,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:19:20,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:20,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:19:20,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:20,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:19:20,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:19:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:20,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:20,861 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:20,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:19:20,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:20,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:19:20,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:20,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:19:20,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:20,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:19:20,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:19:20,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:19:20,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20117822] [2020-09-24 17:19:20,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:19:20,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:19:20,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415906959] [2020-09-24 17:19:20,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:19:20,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:19:20,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:19:20,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:19:20,878 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-09-24 17:19:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:19:21,061 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-09-24 17:19:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:19:21,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 17:19:21,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:19:21,063 INFO L225 Difference]: With dead ends: 67 [2020-09-24 17:19:21,063 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 17:19:21,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:19:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 17:19:21,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-24 17:19:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-24 17:19:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-24 17:19:21,075 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-24 17:19:21,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:19:21,076 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-24 17:19:21,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:19:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-24 17:19:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 17:19:21,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:19:21,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:19:21,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:19:21,078 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:19:21,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:19:21,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-24 17:19:21,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:19:21,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591190014] [2020-09-24 17:19:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:19:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:21,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:21,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:21,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:23,286 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:23,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 17:19:23,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:19:23,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2185 [2020-09-24 17:19:23,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:23,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:19:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 17:19:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:19:23,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:19:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:19:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:23,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:23,411 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:23,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:19:23,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:23,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:19:23,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:23,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:23,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:23,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:23,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:19:23,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:19:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:23,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:23,420 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:23,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:19:23,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:23,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:19:23,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:23,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:19:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:19:23,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591190014] [2020-09-24 17:19:23,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:19:23,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:19:23,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998130980] [2020-09-24 17:19:23,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:19:23,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:19:23,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:19:23,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:19:23,431 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 9 states. [2020-09-24 17:19:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:19:23,788 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2020-09-24 17:19:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:19:23,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-24 17:19:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:19:23,791 INFO L225 Difference]: With dead ends: 77 [2020-09-24 17:19:23,791 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 17:19:23,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:19:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 17:19:23,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2020-09-24 17:19:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 17:19:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-24 17:19:23,802 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 42 [2020-09-24 17:19:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:19:23,803 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-24 17:19:23,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:19:23,803 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-24 17:19:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 17:19:23,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:19:23,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:19:23,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:19:23,805 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:19:23,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:19:23,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1495951507, now seen corresponding path program 1 times [2020-09-24 17:19:23,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:19:23,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417240901] [2020-09-24 17:19:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:19:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:23,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:23,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:24,739 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:24,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 17:19:24,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:19:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 915 [2020-09-24 17:19:24,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:19:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 17:19:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 17:19:24,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:19:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:19:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:24,807 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:24,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:19:24,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:19:24,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:24,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:19:24,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:19:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:24,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:24,821 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:24,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:19:24,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:19:24,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:19:24,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:19:24,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417240901] [2020-09-24 17:19:24,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:19:24,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:19:24,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161860902] [2020-09-24 17:19:24,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:19:24,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:19:24,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:19:24,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:19:24,833 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2020-09-24 17:19:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:19:24,973 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-24 17:19:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 17:19:24,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 17:19:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:19:24,975 INFO L225 Difference]: With dead ends: 87 [2020-09-24 17:19:24,975 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 17:19:24,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:19:24,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 17:19:24,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-24 17:19:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 17:19:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-24 17:19:24,993 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 46 [2020-09-24 17:19:24,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:19:24,995 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-24 17:19:24,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:19:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-24 17:19:25,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 17:19:25,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:19:25,000 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:19:25,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:19:25,001 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:19:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:19:25,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times [2020-09-24 17:19:25,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:19:25,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316153009] [2020-09-24 17:19:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:19:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:25,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:25,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:25,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:27,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:27,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:28,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:28,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:29,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:35,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:35,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:35,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 17:19:35,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 17:19:35,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10688 [2020-09-24 17:19:35,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:19:35,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 17:19:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:19:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:19:35,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:19:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:35,835 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:35,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:19:35,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:19:35,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:35,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 17:19:35,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:19:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:35,849 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:35,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:19:35,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:35,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:19:35,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:35,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:35,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:19:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:19:35,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316153009] [2020-09-24 17:19:35,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:19:35,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 17:19:35,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558291774] [2020-09-24 17:19:35,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:19:35,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:19:35,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:19:35,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:19:35,863 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 10 states. [2020-09-24 17:19:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:19:36,130 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2020-09-24 17:19:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 17:19:36,130 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-24 17:19:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:19:36,132 INFO L225 Difference]: With dead ends: 93 [2020-09-24 17:19:36,132 INFO L226 Difference]: Without dead ends: 64 [2020-09-24 17:19:36,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:19:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-24 17:19:36,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-09-24 17:19:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 17:19:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-09-24 17:19:36,141 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 52 [2020-09-24 17:19:36,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:19:36,141 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-09-24 17:19:36,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:19:36,142 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-09-24 17:19:36,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 17:19:36,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:19:36,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:19:36,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:19:36,143 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:19:36,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:19:36,144 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-09-24 17:19:36,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:19:36,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521962275] [2020-09-24 17:19:36,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:19:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:19:36,167 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:19:36,167 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:19:36,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:19:36,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:19:36 BoogieIcfgContainer [2020-09-24 17:19:36,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:19:36,200 INFO L168 Benchmark]: Toolchain (without parser) took 18094.49 ms. Allocated memory was 140.5 MB in the beginning and 349.7 MB in the end (delta: 209.2 MB). Free memory was 102.4 MB in the beginning and 254.5 MB in the end (delta: -152.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:36,201 INFO L168 Benchmark]: CDTParser took 1.71 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 17:19:36,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.92 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 90.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:36,203 INFO L168 Benchmark]: Boogie Preprocessor took 157.56 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 180.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:36,203 INFO L168 Benchmark]: RCFGBuilder took 416.79 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 162.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:36,204 INFO L168 Benchmark]: TraceAbstraction took 17066.24 ms. Allocated memory was 203.4 MB in the beginning and 349.7 MB in the end (delta: 146.3 MB). Free memory was 161.9 MB in the beginning and 254.5 MB in the end (delta: -92.7 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:36,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.71 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 443.92 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 90.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.56 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 180.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.79 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 162.5 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17066.24 ms. Allocated memory was 203.4 MB in the beginning and 349.7 MB in the end (delta: 146.3 MB). Free memory was 161.9 MB in the beginning and 254.5 MB in the end (delta: -92.7 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i