/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=LOWLEXORDER --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/id2_b3_o5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:33:56,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:33:56,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:33:56,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:33:56,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:33:56,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:33:56,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:33:56,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:33:56,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:33:56,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:33:56,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:33:56,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:33:56,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:33:56,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:33:56,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:33:56,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:33:56,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:33:56,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:33:56,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:33:56,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:33:56,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:33:56,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:33:56,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:33:56,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:33:56,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:33:56,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:33:56,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:33:56,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:33:56,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:33:56,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:33:56,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:33:56,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:33:56,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:33:56,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:33:56,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:33:56,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:33:56,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:33:56,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:33:56,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:33:56,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:33:56,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:33:56,780 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 21:33:56,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:33:56,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:33:56,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:33:56,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:33:56,818 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:33:56,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:33:56,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:33:56,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:33:56,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:33:56,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:33:56,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:33:56,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:33:56,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:33:56,819 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:33:56,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:33:56,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:33:56,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:33:56,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:33:56,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:33:56,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:33:56,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:33:56,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:33:56,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:33:56,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:33:56,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:33:56,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:33:56,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:33:56,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:33:56,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:33:56,823 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:33:57,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:33:57,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:33:57,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:33:57,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:33:57,297 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:33:57,298 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2020-09-24 21:33:57,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1305e57a3/0cda583c76ce432b9af227366c1d71f0/FLAGf63df76e9 [2020-09-24 21:33:57,822 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:33:57,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2020-09-24 21:33:57,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1305e57a3/0cda583c76ce432b9af227366c1d71f0/FLAGf63df76e9 [2020-09-24 21:33:58,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1305e57a3/0cda583c76ce432b9af227366c1d71f0 [2020-09-24 21:33:58,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:33:58,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:33:58,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:33:58,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:33:58,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:33:58,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:33:58" (1/1) ... [2020-09-24 21:33:58,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45241865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:58, skipping insertion in model container [2020-09-24 21:33:58,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:33:58" (1/1) ... [2020-09-24 21:33:58,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:33:58,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:33:58,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:33:58,543 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:33:58,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:33:58,588 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:33:58,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:58 WrapperNode [2020-09-24 21:33:58,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:33:58,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:33:58,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:33:58,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:33:58,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:58" (1/1) ... [2020-09-24 21:33:58,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:58" (1/1) ... [2020-09-24 21:33:58,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:58" (1/1) ... [2020-09-24 21:33:58,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:58" (1/1) ... [2020-09-24 21:33:58,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:58" (1/1) ... [2020-09-24 21:33:58,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:58" (1/1) ... [2020-09-24 21:33:58,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:58" (1/1) ... [2020-09-24 21:33:58,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:33:58,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:33:58,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:33:58,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:33:58,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:33:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:33:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:33:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 21:33:58,773 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-24 21:33:58,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:33:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 21:33:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:33:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 21:33:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-24 21:33:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:33:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:33:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:33:59,069 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:33:59,069 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:33:59,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:33:59 BoogieIcfgContainer [2020-09-24 21:33:59,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:33:59,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:33:59,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:33:59,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:33:59,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:33:58" (1/3) ... [2020-09-24 21:33:59,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7429d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:33:59, skipping insertion in model container [2020-09-24 21:33:59,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:58" (2/3) ... [2020-09-24 21:33:59,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7429d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:33:59, skipping insertion in model container [2020-09-24 21:33:59,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:33:59" (3/3) ... [2020-09-24 21:33:59,097 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b3_o5.c [2020-09-24 21:33:59,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:33:59,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:33:59,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:33:59,166 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:33:59,167 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:33:59,167 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:33:59,167 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:33:59,167 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:33:59,167 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:33:59,168 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:33:59,168 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:33:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-24 21:33:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:33:59,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:59,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:33:59,202 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:59,210 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times [2020-09-24 21:33:59,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:59,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453646166] [2020-09-24 21:33:59,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:59,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:59,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:33:59,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 21:33:59,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:33:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:33:59,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:33:59,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:59,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:59,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:59,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:59,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:33:59,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:59,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:59,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:33:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:59,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:59,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:59,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:33:59,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:33:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:33:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:59,594 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 21:33:59,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453646166] [2020-09-24 21:33:59,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:33:59,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:33:59,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393756712] [2020-09-24 21:33:59,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:33:59,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:59,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:33:59,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:33:59,623 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-24 21:33:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:59,707 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-24 21:33:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:33:59,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:33:59,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:59,733 INFO L225 Difference]: With dead ends: 51 [2020-09-24 21:33:59,733 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 21:33:59,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 21:33:59,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 21:33:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-24 21:33:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 21:33:59,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-24 21:33:59,824 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-09-24 21:33:59,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:59,825 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-24 21:33:59,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:33:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-24 21:33:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 21:33:59,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:59,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:33:59,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:33:59,832 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:59,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:59,833 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times [2020-09-24 21:33:59,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:59,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134845393] [2020-09-24 21:33:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:59,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:00,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:00,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:00,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 21:34:00,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:34:00,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-24 21:34:00,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:34:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:34:00,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 21:34:00,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:34:00,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:00,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:34:00,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:00,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:00,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:00,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:34:00,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:00,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 21:34:00,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:34:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:34:00,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:00,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:00,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:00,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:00,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:00,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:00,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:34:00,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:00,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:00,677 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 21:34:00,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134845393] [2020-09-24 21:34:00,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:34:00,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:34:00,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535253014] [2020-09-24 21:34:00,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:34:00,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:00,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:34:00,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:34:00,683 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-09-24 21:34:00,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:00,824 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-24 21:34:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:34:00,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-24 21:34:00,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:00,826 INFO L225 Difference]: With dead ends: 66 [2020-09-24 21:34:00,827 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 21:34:00,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:34:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 21:34:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 21:34:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 21:34:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-24 21:34:00,838 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2020-09-24 21:34:00,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:00,839 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-24 21:34:00,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:34:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-24 21:34:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 21:34:00,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:00,841 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:00,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:34:00,842 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:00,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:00,842 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times [2020-09-24 21:34:00,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:00,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851997932] [2020-09-24 21:34:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:00,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:01,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:01,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:01,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:34:01,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:34:01,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-09-24 21:34:01,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:34:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 21:34:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:01,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:01,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:01,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:01,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:01,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:34:01,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:01,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:02,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:02,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:34:02,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:34:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-24 21:34:02,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:02,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:34:02,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:34:02,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:02,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:02,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:02,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:02,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:34:02,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:02,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 21:34:02,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:02,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:34:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:34:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:02,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:02,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:02,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:02,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:02,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:02,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:34:02,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:02,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 21:34:02,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851997932] [2020-09-24 21:34:02,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:34:02,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:34:02,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199198006] [2020-09-24 21:34:02,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:34:02,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:02,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:34:02,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:34:02,172 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-09-24 21:34:02,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:02,217 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-09-24 21:34:02,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:34:02,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 21:34:02,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:02,219 INFO L225 Difference]: With dead ends: 69 [2020-09-24 21:34:02,219 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 21:34:02,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 21:34:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 21:34:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-09-24 21:34:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 21:34:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-24 21:34:02,229 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-24 21:34:02,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:02,229 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-24 21:34:02,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:34:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-24 21:34:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 21:34:02,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:02,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:02,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:34:02,232 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:02,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:02,232 INFO L82 PathProgramCache]: Analyzing trace with hash -2109914946, now seen corresponding path program 1 times [2020-09-24 21:34:02,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:02,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487300926] [2020-09-24 21:34:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:02,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:02,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:02,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:02,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:34:02,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:34:02,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-24 21:34:02,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:02,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:34:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 21:34:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:34:02,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:02,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:02,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:02,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:02,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:02,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:02,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:02,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:02,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:02,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:02,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:02,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:02,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:34:02,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 21:34:02,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:34:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:02,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:02,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:02,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:02,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:34:02,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:02,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 21:34:02,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:34:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:34:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:02,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:02,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:02,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:02,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:02,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:34:02,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:02,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:02,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:02,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:02,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 21:34:03,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487300926] [2020-09-24 21:34:03,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:03,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:34:03,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616292878] [2020-09-24 21:34:03,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:34:03,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:03,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:34:03,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:34:03,005 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2020-09-24 21:34:03,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:03,197 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-09-24 21:34:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:34:03,198 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-24 21:34:03,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:03,199 INFO L225 Difference]: With dead ends: 78 [2020-09-24 21:34:03,199 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 21:34:03,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:34:03,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 21:34:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-09-24 21:34:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 21:34:03,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-24 21:34:03,208 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 34 [2020-09-24 21:34:03,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:03,208 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-24 21:34:03,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:34:03,209 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-24 21:34:03,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 21:34:03,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:03,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:03,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:34:03,211 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:03,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:03,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1866785798, now seen corresponding path program 1 times [2020-09-24 21:34:03,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:03,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179935800] [2020-09-24 21:34:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:05,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:05,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 21:34:05,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:34:05,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1786 [2020-09-24 21:34:05,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 21:34:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:34:05,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:05,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:05,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:05,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:05,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:05,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:05,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:34:05,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:05,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:05,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:05,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:05,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:05,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:05,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:05,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:34:05,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:34:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-09-24 21:34:05,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:05,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:34:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:34:05,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:05,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:05,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:05,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:05,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:34:05,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:05,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 21:34:05,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:05,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:05,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:34:05,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:34:05,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:05,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:05,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:05,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:05,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:34:05,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:05,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 21:34:05,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:34:05,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:34:05,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:05,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:06,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:06,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:34:06,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 21:34:06,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179935800] [2020-09-24 21:34:06,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:34:06,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:34:06,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960802291] [2020-09-24 21:34:06,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:34:06,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:06,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:34:06,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:34:06,043 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 8 states. [2020-09-24 21:34:06,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:06,165 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-09-24 21:34:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:34:06,166 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-24 21:34:06,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:06,168 INFO L225 Difference]: With dead ends: 81 [2020-09-24 21:34:06,169 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 21:34:06,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:34:06,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 21:34:06,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-09-24 21:34:06,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 21:34:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-24 21:34:06,185 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 43 [2020-09-24 21:34:06,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:06,187 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-24 21:34:06,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:34:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-24 21:34:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 21:34:06,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:06,189 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:06,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:34:06,190 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:06,190 INFO L82 PathProgramCache]: Analyzing trace with hash 830258234, now seen corresponding path program 1 times [2020-09-24 21:34:06,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:06,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537777627] [2020-09-24 21:34:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:06,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 21:34:06,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:34:06,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-09-24 21:34:06,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:34:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 21:34:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:06,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:06,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:06,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:06,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:06,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:06,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:06,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:06,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:06,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:06,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:07,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:07,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:34:07,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:07,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-24 21:34:07,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:07,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:34:07,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:07,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 21:34:07,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:07,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:07,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:07,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:34:07,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:07,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-24 21:34:07,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:07,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:34:07,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:07,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:07,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:07,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:07,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:34:07,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:07,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 21:34:07,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:07,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:34:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:34:07,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:07,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:07,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:07,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:07,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:07,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:34:07,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:07,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:07,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:07,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:07,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 21:34:07,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537777627] [2020-09-24 21:34:07,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:07,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:34:07,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878867789] [2020-09-24 21:34:07,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:34:07,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:07,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:34:07,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:34:07,545 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 14 states. [2020-09-24 21:34:07,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:07,901 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 21:34:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:34:07,903 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-24 21:34:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:07,906 INFO L225 Difference]: With dead ends: 92 [2020-09-24 21:34:07,906 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 21:34:07,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:34:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 21:34:07,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-09-24 21:34:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 21:34:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-24 21:34:07,928 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 43 [2020-09-24 21:34:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:07,928 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-24 21:34:07,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:34:07,931 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-24 21:34:07,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:34:07,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:07,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:07,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:34:07,936 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:07,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:07,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1598367544, now seen corresponding path program 1 times [2020-09-24 21:34:07,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:07,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187141052] [2020-09-24 21:34:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:07,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:11,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:11,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 21:34:11,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:34:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3193 [2020-09-24 21:34:11,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:34:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 21:34:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:34:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:11,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:11,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:11,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:11,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:11,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:11,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:11,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:11,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:11,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:11,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:11,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:12,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:34:12,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:34:12,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-09-24 21:34:12,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:34:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 21:34:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:34:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:12,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:12,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:34:12,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:12,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-24 21:34:12,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:12,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:34:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:34:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:34:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:12,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:12,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:34:12,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:12,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-24 21:34:12,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:34:12,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:12,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:12,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:12,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:34:12,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 21:34:12,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:12,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:34:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:34:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:12,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:12,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:12,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:34:12,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:12,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:12,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 21:34:12,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187141052] [2020-09-24 21:34:12,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:12,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:34:12,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527260845] [2020-09-24 21:34:12,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:34:12,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:12,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:34:12,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:34:12,830 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 11 states. [2020-09-24 21:34:13,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:13,019 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-09-24 21:34:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:34:13,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 21:34:13,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:13,021 INFO L225 Difference]: With dead ends: 95 [2020-09-24 21:34:13,022 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 21:34:13,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:34:13,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 21:34:13,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-09-24 21:34:13,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 21:34:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-09-24 21:34:13,040 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 52 [2020-09-24 21:34:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:13,040 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-09-24 21:34:13,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:34:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-09-24 21:34:13,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:34:13,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:13,048 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:13,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:34:13,048 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:13,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:13,052 INFO L82 PathProgramCache]: Analyzing trace with hash 444280, now seen corresponding path program 2 times [2020-09-24 21:34:13,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:13,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990392512] [2020-09-24 21:34:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:13,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:14,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:14,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 21:34:14,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:34:14,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1606 [2020-09-24 21:34:14,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:14,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:34:14,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 21:34:14,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:14,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:14,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:14,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:14,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:14,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:14,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:14,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:14,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:14,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:15,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:34:15,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:15,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-24 21:34:15,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:34:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 21:34:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:15,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:15,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:34:15,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:15,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-24 21:34:15,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:34:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 21:34:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:15,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:15,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:15,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:34:15,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-24 21:34:15,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:15,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:15,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:34:15,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:15,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:15,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:34:15,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:15,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 21:34:15,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:15,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:34:15,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:15,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:34:15,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:15,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:15,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:15,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:15,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:15,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:34:15,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:15,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:15,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:15,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 21:34:15,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990392512] [2020-09-24 21:34:15,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:15,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:34:15,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120627045] [2020-09-24 21:34:15,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:34:15,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:15,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:34:15,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:34:15,715 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 14 states. [2020-09-24 21:34:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:15,996 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2020-09-24 21:34:15,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:34:15,999 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-09-24 21:34:15,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:16,000 INFO L225 Difference]: With dead ends: 103 [2020-09-24 21:34:16,000 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 21:34:16,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:34:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 21:34:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2020-09-24 21:34:16,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-24 21:34:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-09-24 21:34:16,016 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 52 [2020-09-24 21:34:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:16,017 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-09-24 21:34:16,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:34:16,017 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-09-24 21:34:16,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 21:34:16,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:16,019 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:16,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:34:16,020 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:16,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:16,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1783783324, now seen corresponding path program 2 times [2020-09-24 21:34:16,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:16,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460646851] [2020-09-24 21:34:16,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:16,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:16,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:16,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:16,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:17,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:21,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:21,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 21:34:21,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:34:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 21:34:21,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:34:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 21:34:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:21,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:21,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:21,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:21,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:21,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:21,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:21,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:21,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:21,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:21,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:21,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:22,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:22,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 21:34:22,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:34:22,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-09-24 21:34:22,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:34:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 21:34:22,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:22,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:22,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:23,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:34:23,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:23,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-24 21:34:23,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:23,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:34:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 21:34:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:23,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:23,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 21:34:23,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:23,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-24 21:34:23,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:34:23,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:23,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 21:34:23,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:23,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:23,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:34:23,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:23,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 21:34:23,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:23,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:23,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:23,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:34:23,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:23,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:23,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 21:34:23,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:23,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 21:34:23,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:34:23,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:34:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:23,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:23,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:23,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:23,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:34:23,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:23,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 21:34:23,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460646851] [2020-09-24 21:34:23,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:23,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:34:23,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036434327] [2020-09-24 21:34:23,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:34:23,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:23,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:34:23,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:34:23,840 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-09-24 21:34:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:24,106 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-09-24 21:34:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:34:24,107 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-09-24 21:34:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:24,107 INFO L225 Difference]: With dead ends: 93 [2020-09-24 21:34:24,108 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:34:24,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:34:24,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:34:24,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:34:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:34:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:34:24,113 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-24 21:34:24,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:24,113 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:34:24,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:34:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:34:24,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:34:24,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:34:24,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:34:24,148 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 21:34:24,148 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:34:24,148 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-09-24 21:34:24,149 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 21:34:24,149 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 21:34:24,149 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-24 21:34:24,149 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 21:34:24,149 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 21:34:24,149 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 21:34:24,149 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 21:34:24,151 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 21:34:24,151 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-09-24 21:34:24,151 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-09-24 21:34:24,151 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:34:24,151 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:34:24,151 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:34:24,152 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:34:24,152 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-09-24 21:34:24,153 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-09-24 21:34:24,153 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 21:34:24,153 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-09-24 21:34:24,153 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-09-24 21:34:24,154 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-09-24 21:34:24,154 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 21:34:24,154 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 21:34:24,155 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-09-24 21:34:24,155 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 21:34:24,155 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-09-24 21:34:24,155 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-24 21:34:24,155 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-09-24 21:34:24,155 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 21:34:24,156 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 21:34:24,156 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-09-24 21:34:24,156 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-24 21:34:24,158 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 21:34:24,159 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 21:34:24,159 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-24 21:34:24,159 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 21:34:24,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:34:24 BoogieIcfgContainer [2020-09-24 21:34:24,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:34:24,177 INFO L168 Benchmark]: Toolchain (without parser) took 25967.59 ms. Allocated memory was 139.5 MB in the beginning and 417.3 MB in the end (delta: 277.9 MB). Free memory was 102.8 MB in the beginning and 150.3 MB in the end (delta: -47.5 MB). Peak memory consumption was 230.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:34:24,178 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:34:24,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.11 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:34:24,181 INFO L168 Benchmark]: Boogie Preprocessor took 104.06 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 181.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:34:24,185 INFO L168 Benchmark]: RCFGBuilder took 379.94 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 167.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:34:24,186 INFO L168 Benchmark]: TraceAbstraction took 25083.84 ms. Allocated memory was 202.4 MB in the beginning and 417.3 MB in the end (delta: 215.0 MB). Free memory was 167.1 MB in the beginning and 150.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 231.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:34:24,197 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 378.11 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.06 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.6 MB in the beginning and 181.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 379.94 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 167.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25083.84 ms. Allocated memory was 202.4 MB in the beginning and 417.3 MB in the end (delta: 215.0 MB). Free memory was 167.1 MB in the beginning and 150.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 231.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.9s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 368 SDtfs, 74 SDslu, 2746 SDs, 0 SdLazy, 747 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 40 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 351 ConstructedInterpolants, 0 QuantifiedInterpolants, 50991 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 92/129 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...