/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:17:56,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:17:56,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:17:56,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:17:56,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:17:56,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:17:56,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:17:56,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:17:56,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:17:56,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:17:56,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:17:56,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:17:56,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:17:56,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:17:56,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:17:56,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:17:56,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:17:56,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:17:56,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:17:56,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:17:56,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:17:56,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:17:56,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:17:56,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:17:56,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:17:56,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:17:56,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:17:56,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:17:56,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:17:56,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:17:56,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:17:56,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:17:56,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:17:56,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:17:56,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:17:56,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:17:56,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:17:56,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:17:56,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:17:56,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:17:56,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:17:56,675 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 [2020-09-25 02:17:56,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:17:56,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:17:56,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:17:56,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:17:56,727 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:17:56,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:17:56,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:17:56,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:17:56,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:17:56,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:17:56,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:17:56,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:17:56,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:17:56,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:17:56,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:17:56,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:17:56,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:17:56,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:17:56,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:17:56,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:17:56,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:17:56,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:17:56,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:17:56,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:17:56,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:17:56,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:17:56,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:17:56,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:17:56,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:17:56,733 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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;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;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:17:57,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:17:57,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:17:57,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:17:57,203 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:17:57,203 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:17:57,204 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-25 02:17:57,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9418002ae/2e9bb3f9097646cc80476d8b719e002a/FLAG2bb363ee6 [2020-09-25 02:17:57,818 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:17:57,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-25 02:17:57,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9418002ae/2e9bb3f9097646cc80476d8b719e002a/FLAG2bb363ee6 [2020-09-25 02:17:58,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9418002ae/2e9bb3f9097646cc80476d8b719e002a [2020-09-25 02:17:58,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:17:58,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:17:58,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:17:58,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:17:58,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:17:58,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:17:58" (1/1) ... [2020-09-25 02:17:58,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d5df5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:58, skipping insertion in model container [2020-09-25 02:17:58,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:17:58" (1/1) ... [2020-09-25 02:17:58,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:17:58,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:17:58,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:17:58,443 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:17:58,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:17:58,489 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:17:58,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:58 WrapperNode [2020-09-25 02:17:58,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:17:58,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:17:58,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:17:58,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:17:58,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:58" (1/1) ... [2020-09-25 02:17:58,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:58" (1/1) ... [2020-09-25 02:17:58,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:58" (1/1) ... [2020-09-25 02:17:58,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:58" (1/1) ... [2020-09-25 02:17:58,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:58" (1/1) ... [2020-09-25 02:17:58,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:58" (1/1) ... [2020-09-25 02:17:58,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:58" (1/1) ... [2020-09-25 02:17:58,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:17:58,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:17:58,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:17:58,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:17:58,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:58" (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 [2020-09-25 02:17:58,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:17:58,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:17:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:17:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:17:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:17:58,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:17:58,757 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:17:58,757 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:17:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:17:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:17:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:17:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:17:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:17:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:17:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:17:58,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:17:58,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:17:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:17:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:17:59,143 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:17:59,143 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 02:17:59,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:17:59 BoogieIcfgContainer [2020-09-25 02:17:59,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:17:59,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:17:59,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:17:59,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:17:59,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:17:58" (1/3) ... [2020-09-25 02:17:59,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c573c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:17:59, skipping insertion in model container [2020-09-25 02:17:59,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:17:58" (2/3) ... [2020-09-25 02:17:59,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c573c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:17:59, skipping insertion in model container [2020-09-25 02:17:59,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:17:59" (3/3) ... [2020-09-25 02:17:59,160 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-09-25 02:17:59,172 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:17:59,181 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:17:59,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:17:59,228 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:17:59,229 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:17:59,229 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:17:59,229 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:17:59,229 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:17:59,229 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:17:59,229 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:17:59,229 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:17:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-25 02:17:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:17:59,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:17:59,260 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] [2020-09-25 02:17:59,260 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:17:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:17:59,267 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-25 02:17:59,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:17:59,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053383511] [2020-09-25 02:17:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:17:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:17:59,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:17:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:17:59,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:17:59,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:17:59,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:17:59,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-25 02:17:59,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:17:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:17:59,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 02:17:59,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:17:59,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 02:17:59,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:17:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:17:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:17:59,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:17:59,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:17:59,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:17:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:17:59,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:17:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:17:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:17:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:17:59,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:17:59,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:17:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:17:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:17:59,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:17:59,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:17:59,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:17:59,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:17:59,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:17:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:17:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:17:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:17:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:17:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:17:59,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053383511] [2020-09-25 02:17:59,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:17:59,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:17:59,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298844747] [2020-09-25 02:17:59,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:17:59,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:17:59,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:17:59,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:17:59,995 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-25 02:18:00,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:00,147 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-09-25 02:18:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:18:00,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-25 02:18:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:00,160 INFO L225 Difference]: With dead ends: 101 [2020-09-25 02:18:00,160 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 02:18:00,165 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 [2020-09-25 02:18:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 02:18:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-25 02:18:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 02:18:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-25 02:18:00,216 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-25 02:18:00,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:00,216 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-25 02:18:00,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:18:00,217 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-25 02:18:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:18:00,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:00,218 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] [2020-09-25 02:18:00,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:18:00,219 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:00,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:00,220 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-25 02:18:00,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:00,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142598480] [2020-09-25 02:18:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:00,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:18:00,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:18:00,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-25 02:18:00,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:00,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:18:00,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:00,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:00,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:00,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:00,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:18:00,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:00,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:00,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:00,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:00,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:00,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:18:00,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:18:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:18:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:00,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142598480] [2020-09-25 02:18:00,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:00,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:18:00,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067722665] [2020-09-25 02:18:00,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:18:00,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:00,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:18:00,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:18:00,677 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-09-25 02:18:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:00,875 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-09-25 02:18:00,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:18:00,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-25 02:18:00,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:00,878 INFO L225 Difference]: With dead ends: 67 [2020-09-25 02:18:00,878 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 02:18:00,880 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 [2020-09-25 02:18:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 02:18:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-25 02:18:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 02:18:00,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-09-25 02:18:00,898 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2020-09-25 02:18:00,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:00,898 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-09-25 02:18:00,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:18:00,899 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-09-25 02:18:00,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 02:18:00,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:00,903 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] [2020-09-25 02:18:00,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:18:00,903 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:00,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:00,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-25 02:18:00,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:00,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382946899] [2020-09-25 02:18:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:01,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:03,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 02:18:03,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:18:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2203 [2020-09-25 02:18:03,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:18:03,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 02:18:03,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:18:03,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:03,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:03,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:03,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:03,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:03,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:18:03,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:03,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:03,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:03,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:03,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:03,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:03,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:03,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:03,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:18:03,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:03,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:18:03,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382946899] [2020-09-25 02:18:03,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:03,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 02:18:03,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460842751] [2020-09-25 02:18:03,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:18:03,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:03,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:18:03,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:18:03,291 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 9 states. [2020-09-25 02:18:03,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:03,612 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-25 02:18:03,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:18:03,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-25 02:18:03,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:03,614 INFO L225 Difference]: With dead ends: 64 [2020-09-25 02:18:03,614 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 02:18:03,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:18:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 02:18:03,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-25 02:18:03,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 02:18:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-25 02:18:03,623 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 42 [2020-09-25 02:18:03,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:03,623 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-25 02:18:03,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:18:03,624 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-25 02:18:03,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 02:18:03,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:03,625 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] [2020-09-25 02:18:03,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:18:03,626 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:03,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:03,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1495951507, now seen corresponding path program 1 times [2020-09-25 02:18:03,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:03,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882806398] [2020-09-25 02:18:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:04,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 02:18:04,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:18:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-09-25 02:18:04,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:18:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 02:18:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 02:18:04,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:04,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:04,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:04,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:04,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:04,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:18:04,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:04,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:04,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:04,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:04,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:04,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:04,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:04,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:04,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:18:04,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:04,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:18:04,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882806398] [2020-09-25 02:18:04,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:04,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:18:04,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060446243] [2020-09-25 02:18:04,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:18:04,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:04,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:18:04,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:18:04,591 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2020-09-25 02:18:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:04,706 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-25 02:18:04,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:18:04,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 02:18:04,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:04,707 INFO L225 Difference]: With dead ends: 87 [2020-09-25 02:18:04,708 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 02:18:04,708 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 [2020-09-25 02:18:04,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 02:18:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-25 02:18:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:18:04,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-25 02:18:04,716 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 46 [2020-09-25 02:18:04,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:04,717 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-25 02:18:04,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:18:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-25 02:18:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:18:04,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:04,719 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] [2020-09-25 02:18:04,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:18:04,719 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:04,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:04,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times [2020-09-25 02:18:04,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:04,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621757785] [2020-09-25 02:18:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:06,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:06,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:09,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:09,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 02:18:09,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 02:18:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4584 [2020-09-25 02:18:09,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:18:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 02:18:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:18:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:09,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:09,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:09,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:09,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:09,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:09,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:18:09,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:09,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:09,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:09,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:09,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:09,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:09,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:18:09,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:09,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:09,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:09,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:09,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:09,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621757785] [2020-09-25 02:18:09,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:09,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:18:09,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010438866] [2020-09-25 02:18:09,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:18:09,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:09,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:18:09,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:18:09,434 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 10 states. [2020-09-25 02:18:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:09,696 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2020-09-25 02:18:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:18:09,696 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-25 02:18:09,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:09,698 INFO L225 Difference]: With dead ends: 93 [2020-09-25 02:18:09,698 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 02:18:09,699 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 [2020-09-25 02:18:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 02:18:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-09-25 02:18:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 02:18:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-09-25 02:18:09,706 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 52 [2020-09-25 02:18:09,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:09,707 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-09-25 02:18:09,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:18:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-09-25 02:18:09,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 02:18:09,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:09,708 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] [2020-09-25 02:18:09,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:18:09,709 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:09,709 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-09-25 02:18:09,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:09,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569853532] [2020-09-25 02:18:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:10,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:10,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:10,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:11,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:12,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:14,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:14,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:18:14,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:18:14,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:18:14,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:18:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 02:18:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 02:18:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:15,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:15,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:15,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:15,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:15,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:15,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:18:15,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:15,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:15,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:15,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:15,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:15,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:15,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:18:15,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:15,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:15,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569853532] [2020-09-25 02:18:15,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:15,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 02:18:15,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7149095] [2020-09-25 02:18:15,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 02:18:15,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:15,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 02:18:15,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:18:15,271 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 18 states. [2020-09-25 02:18:16,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:16,365 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2020-09-25 02:18:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 02:18:16,365 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-09-25 02:18:16,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:16,368 INFO L225 Difference]: With dead ends: 148 [2020-09-25 02:18:16,368 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 02:18:16,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=194, Invalid=1138, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 02:18:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 02:18:16,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 86. [2020-09-25 02:18:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 02:18:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2020-09-25 02:18:16,386 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 58 [2020-09-25 02:18:16,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:16,386 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2020-09-25 02:18:16,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 02:18:16,386 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2020-09-25 02:18:16,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 02:18:16,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:16,391 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-09-25 02:18:16,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:18:16,392 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:16,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:16,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2138852750, now seen corresponding path program 2 times [2020-09-25 02:18:16,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:16,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840124294] [2020-09-25 02:18:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:16,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:16,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:17,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:18,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:19,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:19,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:21,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:21,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 02:18:21,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:18:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:18:21,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:18:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 02:18:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:18:21,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:18:21,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:21,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:21,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:21,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:21,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:18:21,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:21,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:21,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:21,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:21,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:21,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:21,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:18:21,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:21,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 02:18:21,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840124294] [2020-09-25 02:18:21,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:21,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:18:21,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898981763] [2020-09-25 02:18:21,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:18:21,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:21,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:18:21,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:18:21,712 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand 13 states. [2020-09-25 02:18:26,548 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2020-09-25 02:18:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:26,820 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-09-25 02:18:26,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 02:18:26,821 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-09-25 02:18:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:26,822 INFO L225 Difference]: With dead ends: 135 [2020-09-25 02:18:26,822 INFO L226 Difference]: Without dead ends: 129 [2020-09-25 02:18:26,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2020-09-25 02:18:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-25 02:18:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 118. [2020-09-25 02:18:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-25 02:18:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2020-09-25 02:18:26,846 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 64 [2020-09-25 02:18:26,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:26,846 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2020-09-25 02:18:26,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:18:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2020-09-25 02:18:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 02:18:26,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:26,848 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:18:26,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:18:26,848 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:26,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1245154100, now seen corresponding path program 3 times [2020-09-25 02:18:26,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:26,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105529121] [2020-09-25 02:18:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:27,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:28,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:29,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:29,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:31,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:31,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 02:18:31,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:18:31,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:18:31,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:18:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 02:18:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:18:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:32,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:32,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:32,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:32,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:32,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:18:32,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:32,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:32,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:32,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:32,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:32,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:32,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:18:32,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:18:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:18:32,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105529121] [2020-09-25 02:18:32,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:32,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 02:18:32,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801036869] [2020-09-25 02:18:32,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 02:18:32,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:32,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 02:18:32,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:18:32,117 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand 14 states. [2020-09-25 02:18:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:32,694 INFO L93 Difference]: Finished difference Result 162 states and 175 transitions. [2020-09-25 02:18:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 02:18:32,695 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-09-25 02:18:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:32,696 INFO L225 Difference]: With dead ends: 162 [2020-09-25 02:18:32,696 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 02:18:32,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2020-09-25 02:18:32,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 02:18:32,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2020-09-25 02:18:32,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-25 02:18:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2020-09-25 02:18:32,711 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 68 [2020-09-25 02:18:32,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:32,711 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2020-09-25 02:18:32,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 02:18:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2020-09-25 02:18:32,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 02:18:32,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:32,713 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-09-25 02:18:32,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:18:32,713 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:32,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:32,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1864607259, now seen corresponding path program 4 times [2020-09-25 02:18:32,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:32,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496074285] [2020-09-25 02:18:32,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:32,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:33,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:34,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:34,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:37,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:37,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:37,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 02:18:37,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:18:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:18:37,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 02:18:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 02:18:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:18:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:38,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:18:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:38,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:38,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:38,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:18:38,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:38,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:18:38,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:38,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:38,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:18:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:38,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:38,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:18:38,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:18:38,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:18:38,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:18:38,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:18:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:18:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:18:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:18:38,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:18:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 02:18:38,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496074285] [2020-09-25 02:18:38,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:18:38,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 02:18:38,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566699101] [2020-09-25 02:18:38,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 02:18:38,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:18:38,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 02:18:38,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-09-25 02:18:38,345 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 21 states. [2020-09-25 02:18:39,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:18:39,487 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2020-09-25 02:18:39,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 02:18:39,488 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 70 [2020-09-25 02:18:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:18:39,489 INFO L225 Difference]: With dead ends: 121 [2020-09-25 02:18:39,489 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 02:18:39,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 02:18:39,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 02:18:39,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2020-09-25 02:18:39,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 02:18:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 119 transitions. [2020-09-25 02:18:39,498 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 119 transitions. Word has length 70 [2020-09-25 02:18:39,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:18:39,498 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 119 transitions. [2020-09-25 02:18:39,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 02:18:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 119 transitions. [2020-09-25 02:18:39,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 02:18:39,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:39,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 02:18:39,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:18:39,500 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:39,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:39,501 INFO L82 PathProgramCache]: Analyzing trace with hash 685477565, now seen corresponding path program 5 times [2020-09-25 02:18:39,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:39,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404834607] [2020-09-25 02:18:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:18:39,522 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:18:39,522 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:18:39,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 02:18:39,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:18:39 BoogieIcfgContainer [2020-09-25 02:18:39,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:18:39,551 INFO L168 Benchmark]: Toolchain (without parser) took 41407.53 ms. Allocated memory was 141.0 MB in the beginning and 375.4 MB in the end (delta: 234.4 MB). Free memory was 103.3 MB in the beginning and 184.5 MB in the end (delta: -81.2 MB). Peak memory consumption was 153.2 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:39,552 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:18:39,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.74 ms. Allocated memory is still 141.0 MB. Free memory was 102.6 MB in the beginning and 91.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:39,553 INFO L168 Benchmark]: Boogie Preprocessor took 164.72 ms. Allocated memory was 141.0 MB in the beginning and 207.1 MB in the end (delta: 66.1 MB). Free memory was 91.9 MB in the beginning and 184.5 MB in the end (delta: -92.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:39,554 INFO L168 Benchmark]: RCFGBuilder took 492.40 ms. Allocated memory is still 207.1 MB. Free memory was 184.5 MB in the beginning and 165.8 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:39,555 INFO L168 Benchmark]: TraceAbstraction took 40399.30 ms. Allocated memory was 207.1 MB in the beginning and 375.4 MB in the end (delta: 168.3 MB). Free memory was 165.8 MB in the beginning and 184.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 149.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:39,559 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.74 ms. Allocated memory is still 141.0 MB. Free memory was 102.6 MB in the beginning and 91.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 164.72 ms. Allocated memory was 141.0 MB in the beginning and 207.1 MB in the end (delta: 66.1 MB). Free memory was 91.9 MB in the beginning and 184.5 MB in the end (delta: -92.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.40 ms. Allocated memory is still 207.1 MB. Free memory was 184.5 MB in the beginning and 165.8 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40399.30 ms. Allocated memory was 207.1 MB in the beginning and 375.4 MB in the end (delta: 168.3 MB). Free memory was 165.8 MB in the beginning and 184.5 MB in the end (delta: -18.7 MB). Peak memory consumption was 149.6 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