/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:00:42,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:00:42,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:00:42,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:00:42,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:00:42,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:00:42,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:00:42,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:00:42,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:00:42,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:00:42,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:00:42,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:00:42,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:00:42,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:00:42,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:00:42,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:00:42,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:00:42,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:00:42,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:00:42,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:00:42,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:00:42,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:00:42,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:00:42,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:00:42,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:00:42,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:00:42,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:00:42,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:00:42,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:00:42,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:00:42,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:00:42,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:00:42,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:00:42,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:00:42,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:00:42,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:00:42,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:00:42,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:00:42,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:00:42,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:00:42,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:00:42,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:00:42,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:00:42,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:00:42,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:00:42,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:00:42,207 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:00:42,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:00:42,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:00:42,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:00:42,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:00:42,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:00:42,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:00:42,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:00:42,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:00:42,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:00:42,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:00:42,209 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:00:42,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:00:42,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:00:42,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:00:42,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:00:42,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:00:42,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:00:42,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:00:42,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:00:42,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:00:42,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:00:42,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:00:42,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:00:42,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:00:42,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:00:42,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:00:42,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:00:42,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:00:42,686 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:00:42,686 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:00:42,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-25 02:00:42,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6efe70c4/52e9a6d9df224fe7a47418a7439df8ba/FLAGb755ff295 [2020-09-25 02:00:43,284 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:00:43,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-25 02:00:43,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6efe70c4/52e9a6d9df224fe7a47418a7439df8ba/FLAGb755ff295 [2020-09-25 02:00:43,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6efe70c4/52e9a6d9df224fe7a47418a7439df8ba [2020-09-25 02:00:43,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:00:43,660 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:00:43,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:43,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:00:43,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:00:43,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:43" (1/1) ... [2020-09-25 02:00:43,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6ee0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:43, skipping insertion in model container [2020-09-25 02:00:43,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:43" (1/1) ... [2020-09-25 02:00:43,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:00:43,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:00:43,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:43,971 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:00:43,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:44,004 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:00:44,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:44 WrapperNode [2020-09-25 02:00:44,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:44,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:00:44,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:00:44,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:00:44,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:44" (1/1) ... [2020-09-25 02:00:44,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:44" (1/1) ... [2020-09-25 02:00:44,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:44" (1/1) ... [2020-09-25 02:00:44,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:44" (1/1) ... [2020-09-25 02:00:44,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:44" (1/1) ... [2020-09-25 02:00:44,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:44" (1/1) ... [2020-09-25 02:00:44,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:44" (1/1) ... [2020-09-25 02:00:44,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:00:44,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:00:44,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:00:44,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:00:44,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:00:44,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:00:44,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:00:44,190 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-09-25 02:00:44,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:00:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:00:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:00:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-09-25 02:00:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:00:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:00:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:00:44,449 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:00:44,449 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:00:44,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:44 BoogieIcfgContainer [2020-09-25 02:00:44,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:00:44,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:00:44,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:00:44,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:00:44,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:00:43" (1/3) ... [2020-09-25 02:00:44,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee6511a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:44, skipping insertion in model container [2020-09-25 02:00:44,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:44" (2/3) ... [2020-09-25 02:00:44,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee6511a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:44, skipping insertion in model container [2020-09-25 02:00:44,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:44" (3/3) ... [2020-09-25 02:00:44,488 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-09-25 02:00:44,499 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:00:44,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:00:44,527 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:00:44,557 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:00:44,557 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:00:44,557 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:00:44,558 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:00:44,558 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:00:44,558 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:00:44,558 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:00:44,558 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:00:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-25 02:00:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 02:00:44,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:44,586 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] [2020-09-25 02:00:44,587 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:44,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:44,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1470222128, now seen corresponding path program 1 times [2020-09-25 02:00:44,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:44,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521999476] [2020-09-25 02:00:44,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:45,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:45,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:45,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:45,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-09-25 02:00:45,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:00:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:00:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:00:45,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:45,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:45,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:45,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:45,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:45,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:45,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:45,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:00:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:45,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:45,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:45,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:00:45,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:45,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:45,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:45,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:00:45,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521999476] [2020-09-25 02:00:45,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:45,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:00:45,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756343025] [2020-09-25 02:00:45,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:00:45,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:45,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:00:45,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:00:45,377 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 7 states. [2020-09-25 02:00:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:45,529 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2020-09-25 02:00:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:00:45,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 02:00:45,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:45,545 INFO L225 Difference]: With dead ends: 60 [2020-09-25 02:00:45,545 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 02:00:45,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 02:00:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 02:00:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 02:00:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-25 02:00:45,606 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 24 [2020-09-25 02:00:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:45,607 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-25 02:00:45,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:00:45,607 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-25 02:00:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 02:00:45,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:45,610 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] [2020-09-25 02:00:45,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:00:45,611 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:45,611 INFO L82 PathProgramCache]: Analyzing trace with hash 831268307, now seen corresponding path program 1 times [2020-09-25 02:00:45,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:45,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512933321] [2020-09-25 02:00:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:45,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:45,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:45,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:46,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:46,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:00:46,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:46,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-25 02:00:46,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:46,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 02:00:46,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:46,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:46,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:46,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:46,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:46,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:46,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:46,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:46,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:46,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:46,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:00:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:46,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:46,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:00:46,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:46,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:00:46,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:46,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:00:46,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512933321] [2020-09-25 02:00:46,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:46,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:00:46,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360529785] [2020-09-25 02:00:46,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:46,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:46,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:46,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:46,115 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2020-09-25 02:00:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:46,180 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-09-25 02:00:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:00:46,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-25 02:00:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:46,183 INFO L225 Difference]: With dead ends: 46 [2020-09-25 02:00:46,183 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 02:00:46,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 02:00:46,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 02:00:46,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 02:00:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-25 02:00:46,193 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2020-09-25 02:00:46,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:46,194 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-25 02:00:46,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:46,194 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-25 02:00:46,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:00:46,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:46,196 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:46,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:00:46,196 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:46,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:46,197 INFO L82 PathProgramCache]: Analyzing trace with hash -852904039, now seen corresponding path program 1 times [2020-09-25 02:00:46,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:46,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206898741] [2020-09-25 02:00:46,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:46,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:46,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:46,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:00:46,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-25 02:00:46,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:46,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:00:46,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 02:00:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:46,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:46,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:46,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:46,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:46,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:46,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:46,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:46,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:46,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:00:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:46,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:46,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:46,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:00:46,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:46,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 02:00:46,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:00:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 02:00:46,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:46,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:46,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:46,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:46,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:46,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:46,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:46,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:00:46,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:46,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:46,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:46,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:46,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:00:46,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206898741] [2020-09-25 02:00:46,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:46,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:00:46,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574591348] [2020-09-25 02:00:46,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:00:46,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:46,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:00:46,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:46,811 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 8 states. [2020-09-25 02:00:46,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:46,963 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-09-25 02:00:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:00:46,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 02:00:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:46,965 INFO L225 Difference]: With dead ends: 56 [2020-09-25 02:00:46,966 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 02:00:46,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:00:46,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 02:00:46,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 02:00:46,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:00:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-09-25 02:00:46,977 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 35 [2020-09-25 02:00:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:46,977 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-09-25 02:00:46,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:00:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-09-25 02:00:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:00:46,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:46,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:46,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:00:46,982 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:46,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:46,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2030561919, now seen corresponding path program 1 times [2020-09-25 02:00:46,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:46,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740331358] [2020-09-25 02:00:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:47,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:00:47,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:47,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-25 02:00:47,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 02:00:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:47,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:47,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:47,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:47,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:47,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:47,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:47,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:47,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:00:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:47,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:00:47,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:47,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 02:00:47,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 02:00:47,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:47,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:47,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:47,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:47,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:47,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:00:47,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:47,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:00:47,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740331358] [2020-09-25 02:00:47,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:47,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:00:47,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447399189] [2020-09-25 02:00:47,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:00:47,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:47,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:00:47,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:00:47,524 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 7 states. [2020-09-25 02:00:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:47,639 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-25 02:00:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:00:47,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 02:00:47,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:47,641 INFO L225 Difference]: With dead ends: 56 [2020-09-25 02:00:47,642 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 02:00:47,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:00:47,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 02:00:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-25 02:00:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 02:00:47,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-09-25 02:00:47,658 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 35 [2020-09-25 02:00:47,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:47,658 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-09-25 02:00:47,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:00:47,659 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-09-25 02:00:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:00:47,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:47,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:47,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:00:47,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:47,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:47,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2122258312, now seen corresponding path program 1 times [2020-09-25 02:00:47,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:47,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116170937] [2020-09-25 02:00:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:00:48,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:00:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-09-25 02:00:48,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:00:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:00:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:00:48,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:48,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:48,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:48,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:00:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:00:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:00:48,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:48,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-25 02:00:48,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:00:48,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 02:00:48,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:48,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:00:48,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:00:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 02:00:48,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116170937] [2020-09-25 02:00:48,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:48,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:00:48,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866200955] [2020-09-25 02:00:48,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:00:48,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:48,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:00:48,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:00:48,755 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 7 states. [2020-09-25 02:00:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:48,847 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-09-25 02:00:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:00:48,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 02:00:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:48,849 INFO L225 Difference]: With dead ends: 48 [2020-09-25 02:00:48,850 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 02:00:48,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:00:48,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 02:00:48,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 02:00:48,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:00:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-25 02:00:48,857 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 36 [2020-09-25 02:00:48,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:48,858 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-25 02:00:48,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:00:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-25 02:00:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 02:00:48,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:48,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:48,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:00:48,860 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:48,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:48,860 INFO L82 PathProgramCache]: Analyzing trace with hash 404002040, now seen corresponding path program 1 times [2020-09-25 02:00:48,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:48,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567129365] [2020-09-25 02:00:48,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:50,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:00:50,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:00:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1520 [2020-09-25 02:00:50,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:00:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:00:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:00:50,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:50,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:50,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:50,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:50,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:50,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:50,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:00:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:50,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:50,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:00:50,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 02:00:50,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:00:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 02:00:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:50,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:50,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:00:50,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 02:00:50,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:50,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:50,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 02:00:50,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567129365] [2020-09-25 02:00:50,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:50,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:00:50,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774621881] [2020-09-25 02:00:50,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:00:50,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:50,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:00:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:50,746 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2020-09-25 02:00:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:50,881 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-09-25 02:00:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:00:50,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 02:00:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:50,887 INFO L225 Difference]: With dead ends: 53 [2020-09-25 02:00:50,887 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 02:00:50,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:00:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 02:00:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-25 02:00:50,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 02:00:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-09-25 02:00:50,900 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 36 [2020-09-25 02:00:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:50,903 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-09-25 02:00:50,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:00:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-09-25 02:00:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 02:00:50,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:50,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:50,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:00:50,905 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:50,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:50,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1010225367, now seen corresponding path program 1 times [2020-09-25 02:00:50,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:50,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201163591] [2020-09-25 02:00:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:00:55,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 02:00:55,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4792 [2020-09-25 02:00:55,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:00:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:00:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:00:55,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:55,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:55,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:55,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:55,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:55,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:55,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:55,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:55,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 02:00:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:56,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 02:00:56,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:00:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-09-25 02:00:56,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:00:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 02:00:56,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:56,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:00:56,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:56,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 02:00:56,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:00:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:56,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 02:00:56,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:56,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:00:56,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 02:00:56,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 02:00:56,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201163591] [2020-09-25 02:00:56,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:56,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:00:56,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30387443] [2020-09-25 02:00:56,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:00:56,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:56,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:00:56,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:56,959 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 8 states. [2020-09-25 02:00:57,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:57,095 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-09-25 02:00:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:00:57,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-09-25 02:00:57,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:57,096 INFO L225 Difference]: With dead ends: 47 [2020-09-25 02:00:57,096 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 02:00:57,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:00:57,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 02:00:57,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 02:00:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 02:00:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 02:00:57,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2020-09-25 02:00:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:57,101 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 02:00:57,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:00:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 02:00:57,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 02:00:57,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:00:57,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 02:00:57,232 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 02:00:57,232 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:00:57,232 INFO L268 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed. [2020-09-25 02:00:57,232 INFO L268 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed. [2020-09-25 02:00:57,233 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y1 1) gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (<= 1 gcd_~y1)) [2020-09-25 02:00:57,233 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 02:00:57,233 INFO L271 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true [2020-09-25 02:00:57,233 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= 1 gcd_~y2) (<= (+ gcd_~y2 1) gcd_~y1) (= gcd_~y2 |gcd_#in~y2|) (= gcd_~y1 |gcd_#in~y1|)) [2020-09-25 02:00:57,233 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 02:00:57,233 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-09-25 02:00:57,233 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 02:00:57,234 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-09-25 02:00:57,234 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 02:00:57,234 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 02:00:57,234 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 02:00:57,235 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-25 02:00:57,235 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 02:00:57,235 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-25 02:00:57,235 INFO L268 CegarLoopResult]: For program point L15(lines 15 26) no Hoare annotation was computed. [2020-09-25 02:00:57,235 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:00:57,235 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 02:00:57,235 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 02:00:57,235 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:00:57,236 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 02:00:57,236 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 02:00:57,236 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 02:00:57,236 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 02:00:57,236 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 02:00:57,236 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-25 02:00:57,236 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed. [2020-09-25 02:00:57,237 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-09-25 02:00:57,237 INFO L268 CegarLoopResult]: For program point L38-1(lines 28 43) no Hoare annotation was computed. [2020-09-25 02:00:57,237 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-25 02:00:57,237 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2020-09-25 02:00:57,237 INFO L268 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-09-25 02:00:57,237 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true [2020-09-25 02:00:57,237 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 02:00:57,238 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-25 02:00:57,238 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~n~0) (<= 1 main_~m~0)) [2020-09-25 02:00:57,238 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-25 02:00:57,238 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 02:00:57,238 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-25 02:00:57,238 INFO L268 CegarLoopResult]: For program point L37-3(line 37) no Hoare annotation was computed. [2020-09-25 02:00:57,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:00:57 BoogieIcfgContainer [2020-09-25 02:00:57,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:00:57,252 INFO L168 Benchmark]: Toolchain (without parser) took 13594.04 ms. Allocated memory was 139.5 MB in the beginning and 313.5 MB in the end (delta: 174.1 MB). Free memory was 102.4 MB in the beginning and 214.7 MB in the end (delta: -112.3 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:00:57,258 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-25 02:00:57,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.71 ms. Allocated memory is still 139.5 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:00:57,260 INFO L168 Benchmark]: Boogie Preprocessor took 112.82 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 180.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:00:57,261 INFO L168 Benchmark]: RCFGBuilder took 335.39 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 166.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:00:57,262 INFO L168 Benchmark]: TraceAbstraction took 12783.52 ms. Allocated memory was 202.4 MB in the beginning and 313.5 MB in the end (delta: 111.1 MB). Free memory was 165.4 MB in the beginning and 214.7 MB in the end (delta: -49.3 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:00:57,273 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.71 ms. Allocated memory is still 139.5 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.82 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 180.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 335.39 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 166.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12783.52 ms. Allocated memory was 202.4 MB in the beginning and 313.5 MB in the end (delta: 111.1 MB). Free memory was 165.4 MB in the beginning and 214.7 MB in the end (delta: -49.3 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.5s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 227 SDtfs, 229 SDslu, 774 SDs, 0 SdLazy, 355 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 42 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 16213 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 40/41 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...