/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:47:36,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:47:36,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:47:36,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:47:36,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:47:36,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:47:36,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:47:36,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:47:36,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:47:36,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:47:36,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:47:36,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:47:36,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:47:36,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:47:36,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:47:36,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:47:36,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:47:36,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:47:36,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:47:36,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:47:36,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:47:36,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:47:36,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:47:36,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:47:36,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:47:36,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:47:36,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:47:36,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:47:36,677 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:47:36,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:47:36,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:47:36,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:47:36,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:47:36,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:47:36,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:47:36,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:47:36,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:47:36,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:47:36,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:47:36,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:47:36,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:47:36,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:47:36,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:47:36,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:47:36,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:47:36,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:47:36,720 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:47:36,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:47:36,720 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:47:36,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:47:36,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:47:36,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:47:36,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:47:36,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:47:36,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:47:36,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:47:36,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:47:36,722 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:47:36,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:47:36,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:47:36,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:47:36,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:47:36,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:47:36,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:47:36,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:47:36,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:47:36,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:47:36,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:47:36,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:47:36,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:47:36,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:47:36,725 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:47:37,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:47:37,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:47:37,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:47:37,207 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:47:37,208 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:47:37,209 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-09-24 23:47:37,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2360fa9c6/055636c23d634ef9bb52f9e959a56901/FLAGed8b54ddd [2020-09-24 23:47:37,821 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:47:37,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-09-24 23:47:37,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2360fa9c6/055636c23d634ef9bb52f9e959a56901/FLAGed8b54ddd [2020-09-24 23:47:38,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2360fa9c6/055636c23d634ef9bb52f9e959a56901 [2020-09-24 23:47:38,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:47:38,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:47:38,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:47:38,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:47:38,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:47:38,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:47:38" (1/1) ... [2020-09-24 23:47:38,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3705ef2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:38, skipping insertion in model container [2020-09-24 23:47:38,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:47:38" (1/1) ... [2020-09-24 23:47:38,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:47:38,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:47:38,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:47:38,458 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:47:38,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:47:38,489 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:47:38,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:38 WrapperNode [2020-09-24 23:47:38,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:47:38,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:47:38,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:47:38,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:47:38,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:38" (1/1) ... [2020-09-24 23:47:38,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:38" (1/1) ... [2020-09-24 23:47:38,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:38" (1/1) ... [2020-09-24 23:47:38,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:38" (1/1) ... [2020-09-24 23:47:38,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:38" (1/1) ... [2020-09-24 23:47:38,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:38" (1/1) ... [2020-09-24 23:47:38,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:38" (1/1) ... [2020-09-24 23:47:38,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:47:38,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:47:38,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:47:38,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:47:38,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:47:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:47:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:47:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 23:47:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:47:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:47:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:47:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 23:47:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:47:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:47:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:47:38,939 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:47:38,939 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:47:38,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:47:38 BoogieIcfgContainer [2020-09-24 23:47:38,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:47:38,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:47:38,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:47:38,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:47:38,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:47:38" (1/3) ... [2020-09-24 23:47:38,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713da6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:47:38, skipping insertion in model container [2020-09-24 23:47:38,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:38" (2/3) ... [2020-09-24 23:47:38,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@713da6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:47:38, skipping insertion in model container [2020-09-24 23:47:38,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:47:38" (3/3) ... [2020-09-24 23:47:38,954 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2020-09-24 23:47:38,968 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:47:38,978 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:47:39,000 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:47:39,034 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:47:39,034 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:47:39,034 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:47:39,034 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:47:39,035 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:47:39,035 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:47:39,035 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:47:39,035 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:47:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 23:47:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 23:47:39,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:39,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:39,079 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:39,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 23:47:39,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:39,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965741757] [2020-09-24 23:47:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:39,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:47:39,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:39,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 23:47:39,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:47:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:47:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:39,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:39,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:39,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:47:39,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:39,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:39,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:39,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:39,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:39,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 23:47:39,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:39,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:39,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:47:39,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965741757] [2020-09-24 23:47:39,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:47:39,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:47:39,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50904281] [2020-09-24 23:47:39,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:47:39,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:39,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:47:39,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:47:39,434 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 23:47:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:39,571 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 23:47:39,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:47:39,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 23:47:39,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:39,586 INFO L225 Difference]: With dead ends: 44 [2020-09-24 23:47:39,587 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 23:47:39,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:47:39,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 23:47:39,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 23:47:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:47:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 23:47:39,650 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 23:47:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:39,650 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 23:47:39,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:47:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 23:47:39,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 23:47:39,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:39,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:39,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:47:39,655 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:39,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:39,656 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 23:47:39,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:39,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584777230] [2020-09-24 23:47:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:39,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:39,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:47:39,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 23:47:39,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:39,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:39,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:39,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:39,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:47:39,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:39,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:39,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:39,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:39,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:39,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:39,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 23:47:39,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:39,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:39,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:47:39,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584777230] [2020-09-24 23:47:39,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:47:39,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:47:39,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129676578] [2020-09-24 23:47:39,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:47:39,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:39,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:47:39,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:47:39,921 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 23:47:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:40,022 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 23:47:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:47:40,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 23:47:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:40,025 INFO L225 Difference]: With dead ends: 36 [2020-09-24 23:47:40,026 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 23:47:40,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:47:40,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 23:47:40,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 23:47:40,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:47:40,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 23:47:40,036 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 23:47:40,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:40,040 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 23:47:40,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:47:40,040 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 23:47:40,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 23:47:40,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:40,042 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:40,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:47:40,043 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:40,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:40,044 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 23:47:40,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:40,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216480375] [2020-09-24 23:47:40,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:40,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:40,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 23:47:40,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-09-24 23:47:40,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:47:40,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:40,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:40,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:40,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:40,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:40,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:47:40,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:40,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:40,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:40,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:41,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:41,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:47:41,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:41,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-24 23:47:41,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:41,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:41,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:47:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:41,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:41,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:41,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:41,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:41,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:41,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:47:41,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:41,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:41,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:41,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:41,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:41,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:47:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:41,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:41,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:41,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:41,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:41,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 23:47:41,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:41,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:41,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:47:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:47:41,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216480375] [2020-09-24 23:47:41,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:41,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:47:41,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413023820] [2020-09-24 23:47:41,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:47:41,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:41,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:47:41,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:47:41,293 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 23:47:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:41,446 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-24 23:47:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:47:41,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 23:47:41,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:41,452 INFO L225 Difference]: With dead ends: 62 [2020-09-24 23:47:41,453 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 23:47:41,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:47:41,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 23:47:41,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-24 23:47:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 23:47:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-24 23:47:41,477 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-24 23:47:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:41,478 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-24 23:47:41,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:47:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-24 23:47:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 23:47:41,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:41,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:41,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:47:41,482 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:41,482 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 23:47:41,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:41,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80579536] [2020-09-24 23:47:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:41,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:41,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:42,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 23:47:42,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:47:42,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-09-24 23:47:42,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:47:42,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:42,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:42,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:47:42,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:42,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:42,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:42,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:47:42,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:47:42,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-09-24 23:47:42,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:42,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:42,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:47:42,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:42,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:42,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:42,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:42,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 23:47:42,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:47:42,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:42,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:42,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:42,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:47:42,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:42,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:47:42,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80579536] [2020-09-24 23:47:42,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:42,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:47:42,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251527680] [2020-09-24 23:47:42,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:47:42,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:42,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:47:42,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:47:42,840 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-24 23:47:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:43,049 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-24 23:47:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:47:43,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 23:47:43,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:43,063 INFO L225 Difference]: With dead ends: 94 [2020-09-24 23:47:43,063 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 23:47:43,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:47:43,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 23:47:43,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-24 23:47:43,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 23:47:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-24 23:47:43,100 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-24 23:47:43,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:43,101 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-24 23:47:43,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:47:43,101 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-24 23:47:43,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 23:47:43,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:43,110 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:43,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:47:43,111 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:43,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 23:47:43,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:43,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684475827] [2020-09-24 23:47:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:43,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:48,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 23:47:48,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:47:48,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 23:47:48,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:48,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:48,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:48,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 23:47:48,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:48,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:48,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:48,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:48,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:47:48,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:50,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:47:50,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:47:50,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1932 [2020-09-24 23:47:50,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:50,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:47:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:50,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:50,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:50,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:47:50,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-24 23:47:50,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:47:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:47:50,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:50,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:50,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:50,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:50,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:50,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:47:50,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:50,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:50,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:47:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:50,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:50,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:50,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:47:50,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:50,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:50,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:50,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:50,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:50,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:47:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:50,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:50,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:50,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:47:50,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 23:47:50,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684475827] [2020-09-24 23:47:50,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:50,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 23:47:50,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129042915] [2020-09-24 23:47:50,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:47:50,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:50,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:47:50,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:47:50,497 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 8 states. [2020-09-24 23:47:50,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:50,638 INFO L93 Difference]: Finished difference Result 128 states and 196 transitions. [2020-09-24 23:47:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:47:50,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 23:47:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:50,641 INFO L225 Difference]: With dead ends: 128 [2020-09-24 23:47:50,641 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 23:47:50,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:47:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 23:47:50,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-09-24 23:47:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 23:47:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2020-09-24 23:47:50,660 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 51 [2020-09-24 23:47:50,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:50,660 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2020-09-24 23:47:50,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:47:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2020-09-24 23:47:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 23:47:50,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:50,664 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:50,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:47:50,664 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:50,665 INFO L82 PathProgramCache]: Analyzing trace with hash 182663806, now seen corresponding path program 2 times [2020-09-24 23:47:50,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:50,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531149679] [2020-09-24 23:47:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:55,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:55,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 23:47:55,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:47:55,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 23:47:55,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 23:47:55,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:55,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:55,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:55,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:55,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:55,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:47:55,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:55,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:55,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:55,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:57,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:57,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:58,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:00,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:00,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 23:48:00,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 23:48:00,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 23:48:00,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:00,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:48:00,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:48:00,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 23:48:00,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:00,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:48:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:00,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:00,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:01,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:01,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:01,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:03,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:48:03,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:48:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3009 [2020-09-24 23:48:03,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:03,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:48:03,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:03,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 23:48:03,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:48:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:03,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:48:03,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 23:48:03,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:48:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:48:03,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:03,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:48:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:03,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:03,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:03,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:48:03,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:03,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:03,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:48:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:03,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:03,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:03,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:48:03,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:48:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:03,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:48:03,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:03,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:48:03,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:48:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:48:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:03,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 23:48:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:03,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:03,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:48:03,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:03,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:48:03,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:48:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:03,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:48:03,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 40 proven. 33 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-09-24 23:48:03,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531149679] [2020-09-24 23:48:03,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:03,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 23:48:03,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712999039] [2020-09-24 23:48:03,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:48:03,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:03,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:48:03,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:48:03,965 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand 8 states. [2020-09-24 23:48:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:04,147 INFO L93 Difference]: Finished difference Result 130 states and 200 transitions. [2020-09-24 23:48:04,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:48:04,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-24 23:48:04,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:04,151 INFO L225 Difference]: With dead ends: 130 [2020-09-24 23:48:04,151 INFO L226 Difference]: Without dead ends: 124 [2020-09-24 23:48:04,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:48:04,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-24 23:48:04,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 96. [2020-09-24 23:48:04,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-24 23:48:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 155 transitions. [2020-09-24 23:48:04,172 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 155 transitions. Word has length 69 [2020-09-24 23:48:04,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:04,173 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 155 transitions. [2020-09-24 23:48:04,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:48:04,173 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 155 transitions. [2020-09-24 23:48:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 23:48:04,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:04,181 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:04,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:48:04,181 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:04,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:04,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1565208475, now seen corresponding path program 3 times [2020-09-24 23:48:04,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:04,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124096907] [2020-09-24 23:48:04,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:04,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:09,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 23:48:09,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:48:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 23:48:09,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:48:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:48:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 23:48:09,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:09,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:48:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:09,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:48:09,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:09,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:48:09,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:09,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:09,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:48:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:09,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:09,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:10,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:11,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:12,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:13,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:13,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:14,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:14,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-24 23:48:14,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-09-24 23:48:14,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 23:48:14,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:14,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:48:14,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:48:14,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 23:48:14,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:14,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:48:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:14,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:14,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:14,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:14,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:14,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:19,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 23:48:19,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 23:48:19,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:48:19,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:48:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:48:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 23:48:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:19,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:48:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:19,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:19,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:48:19,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:19,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 23:48:19,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:48:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:48:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:48:19,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:48:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:19,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:19,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:19,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:19,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 23:48:19,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:19,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:48:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:19,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:48:19,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:19,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:48:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:19,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:19,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:48:19,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:19,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:48:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:48:19,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:19,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:48:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:19,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:48:19,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 23:48:19,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:48:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:48:19,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:48:19,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:19,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:48:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:19,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:19,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:19,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:48:19,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:48:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:48:19,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:48:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:19,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:19,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:19,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:48:19,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:48:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:48:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:48:19,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:48:19,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 23:48:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:19,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:20,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:20,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:20,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:21,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:24,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 23:48:24,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 23:48:24,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 23:48:24,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:24,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:48:24,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:48:24,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 23:48:24,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:24,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:48:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:24,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:24,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:25,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:25,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:26,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:26,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:48:26,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:48:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1954 [2020-09-24 23:48:26,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:48:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 23:48:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:26,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:48:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:26,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:26,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:26,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:26,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:48:26,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:26,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 23:48:26,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:26,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:48:26,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:26,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:48:26,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:48:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:26,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:26,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:26,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:26,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:26,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:48:26,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:26,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:48:26,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:26,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:48:26,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:26,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:48:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:26,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:26,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:26,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:26,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:48:26,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:26,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:48:26,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:26,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:48:26,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:26,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:48:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:26,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:26,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:26,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:48:26,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:26,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:48:26,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:48:26,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:48:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 23:48:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:26,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:26,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:48:26,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:48:26,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 23:48:26,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:48:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:48:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:48:26,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:27,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:48:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:27,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:27,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:48:27,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:48:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:27,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:48:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:27,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:48:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:27,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:48:27,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:48:27,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:48:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:48:27,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:48:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:48:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:48:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:48:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:48:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 213 proven. 298 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-09-24 23:48:27,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124096907] [2020-09-24 23:48:27,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:48:27,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 23:48:27,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127175060] [2020-09-24 23:48:27,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 23:48:27,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:48:27,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 23:48:27,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:48:27,076 INFO L87 Difference]: Start difference. First operand 96 states and 155 transitions. Second operand 16 states. [2020-09-24 23:48:27,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:48:27,466 INFO L93 Difference]: Finished difference Result 201 states and 327 transitions. [2020-09-24 23:48:27,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 23:48:27,467 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 153 [2020-09-24 23:48:27,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:48:27,469 INFO L225 Difference]: With dead ends: 201 [2020-09-24 23:48:27,469 INFO L226 Difference]: Without dead ends: 111 [2020-09-24 23:48:27,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-24 23:48:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-24 23:48:27,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 86. [2020-09-24 23:48:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 23:48:27,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-09-24 23:48:27,484 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 153 [2020-09-24 23:48:27,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:48:27,485 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-09-24 23:48:27,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 23:48:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-09-24 23:48:27,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 23:48:27,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:48:27,488 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:48:27,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:48:27,488 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:48:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:48:27,489 INFO L82 PathProgramCache]: Analyzing trace with hash 82967293, now seen corresponding path program 4 times [2020-09-24 23:48:27,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:48:27,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289949653] [2020-09-24 23:48:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:48:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:48:27,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:27,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:28,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:28,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:28,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking...