/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:21:21,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:21:21,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:21:22,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:21:22,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:21:22,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:21:22,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:21:22,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:21:22,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:21:22,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:21:22,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:21:22,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:21:22,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:21:22,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:21:22,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:21:22,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:21:22,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:21:22,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:21:22,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:21:22,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:21:22,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:21:22,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:21:22,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:21:22,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:21:22,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:21:22,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:21:22,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:21:22,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:21:22,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:21:22,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:21:22,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:21:22,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:21:22,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:21:22,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:21:22,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:21:22,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:21:22,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:21:22,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:21:22,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:21:22,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:21:22,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:21:22,075 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 13:21:22,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:21:22,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:21:22,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:21:22,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:21:22,123 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:21:22,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:21:22,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:21:22,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:21:22,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:21:22,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:21:22,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:21:22,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:21:22,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:21:22,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:21:22,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:21:22,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:21:22,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:21:22,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:21:22,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:21:22,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:21:22,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:21:22,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:21:22,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:21:22,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:21:22,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:21:22,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:21:22,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:21:22,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:21:22,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:21:22,130 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:21:22,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:21:22,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:21:22,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:21:22,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:21:22,650 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:21:22,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-25 13:21:22,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a50d97397/756f1373a4ee4b02bdd19b0e9a777cdd/FLAGdccc1891c [2020-09-25 13:21:23,326 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:21:23,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-25 13:21:23,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a50d97397/756f1373a4ee4b02bdd19b0e9a777cdd/FLAGdccc1891c [2020-09-25 13:21:23,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a50d97397/756f1373a4ee4b02bdd19b0e9a777cdd [2020-09-25 13:21:23,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:21:23,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:21:23,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:23,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:21:23,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:21:23,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:23" (1/1) ... [2020-09-25 13:21:23,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18215cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:23, skipping insertion in model container [2020-09-25 13:21:23,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:23" (1/1) ... [2020-09-25 13:21:23,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:21:23,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:21:23,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:23,951 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:21:23,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:23,985 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:21:23,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:23 WrapperNode [2020-09-25 13:21:23,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:23,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:21:23,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:21:23,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:21:24,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:23" (1/1) ... [2020-09-25 13:21:24,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:23" (1/1) ... [2020-09-25 13:21:24,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:23" (1/1) ... [2020-09-25 13:21:24,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:23" (1/1) ... [2020-09-25 13:21:24,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:23" (1/1) ... [2020-09-25 13:21:24,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:23" (1/1) ... [2020-09-25 13:21:24,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:23" (1/1) ... [2020-09-25 13:21:24,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:21:24,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:21:24,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:21:24,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:21:24,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:23" (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 13:21:24,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:21:24,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:21:24,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-09-25 13:21:24,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-09-25 13:21:24,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:21:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:21:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:21:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-09-25 13:21:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-09-25 13:21:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:21:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:21:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:21:24,448 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:21:24,448 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:21:24,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:24 BoogieIcfgContainer [2020-09-25 13:21:24,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:21:24,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:21:24,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:21:24,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:21:24,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:21:23" (1/3) ... [2020-09-25 13:21:24,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2454493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:24, skipping insertion in model container [2020-09-25 13:21:24,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:23" (2/3) ... [2020-09-25 13:21:24,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2454493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:24, skipping insertion in model container [2020-09-25 13:21:24,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:24" (3/3) ... [2020-09-25 13:21:24,465 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-09-25 13:21:24,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:21:24,492 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:21:24,519 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:21:24,573 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:21:24,574 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:21:24,574 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:21:24,574 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:21:24,574 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:21:24,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:21:24,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:21:24,575 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:21:24,599 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 13:21:24,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 13:21:24,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:24,608 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] [2020-09-25 13:21:24,608 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:24,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:24,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1047957633, now seen corresponding path program 1 times [2020-09-25 13:21:24,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:24,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413711183] [2020-09-25 13:21:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:24,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:25,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:25,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:21:25,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-25 13:21:25,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:25,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:21:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:21:25,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:21:25,312 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-09-25 13:21:25,433 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-09-25 13:21:25,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:25,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:25,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:25,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:21:25,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:25,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:25,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:25,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:25,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:21:25,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:25,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:25,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:25,574 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 13:21:25,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413711183] [2020-09-25 13:21:25,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:25,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:21:25,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389018418] [2020-09-25 13:21:25,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:21:25,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:25,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:21:25,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:21:25,609 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 8 states. [2020-09-25 13:21:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:25,882 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-09-25 13:21:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:21:25,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-25 13:21:25,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:25,899 INFO L225 Difference]: With dead ends: 60 [2020-09-25 13:21:25,899 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 13:21:25,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:21:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 13:21:25,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 13:21:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 13:21:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-25 13:21:25,966 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-09-25 13:21:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:25,967 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-25 13:21:25,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:21:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-25 13:21:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 13:21:25,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:25,970 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] [2020-09-25 13:21:25,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:21:25,971 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:25,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1743555941, now seen corresponding path program 1 times [2020-09-25 13:21:25,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:25,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334121851] [2020-09-25 13:21:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:26,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:26,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:21:26,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 13:21:26,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:26,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:21:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:21:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:26,372 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 12 [2020-09-25 13:21:26,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:26,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:26,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:26,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:26,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:26,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:26,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:26,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:26,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:26,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:26,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:26,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:21:26,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:26,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:26,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:26,567 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 13:21:26,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334121851] [2020-09-25 13:21:26,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:26,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:21:26,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062953252] [2020-09-25 13:21:26,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:21:26,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:26,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:21:26,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:21:26,572 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2020-09-25 13:21:26,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:26,714 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-09-25 13:21:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:21:26,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-25 13:21:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:26,716 INFO L225 Difference]: With dead ends: 49 [2020-09-25 13:21:26,716 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:21:26,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:21:26,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:21:26,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 13:21:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 13:21:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-25 13:21:26,726 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 21 [2020-09-25 13:21:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:26,726 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-25 13:21:26,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:21:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-25 13:21:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 13:21:26,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:26,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:26,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:21:26,729 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:26,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:26,729 INFO L82 PathProgramCache]: Analyzing trace with hash 698419476, now seen corresponding path program 1 times [2020-09-25 13:21:26,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:26,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442417217] [2020-09-25 13:21:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:26,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:27,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 13:21:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 13:21:27,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:27,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:21:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:21:27,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:27,209 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 15 [2020-09-25 13:21:27,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:27,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:27,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:27,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:27,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:27,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:27,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:27,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:27,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:27,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:21:27,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:27,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 13:21:27,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:27,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:27,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:21:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:21:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:27,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:27,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:27,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:27,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:21:27,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:27,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:27,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:27,533 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 13:21:27,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442417217] [2020-09-25 13:21:27,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:27,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 13:21:27,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214257780] [2020-09-25 13:21:27,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:21:27,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:27,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:21:27,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:21:27,536 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 11 states. [2020-09-25 13:21:27,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:27,798 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-25 13:21:27,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:21:27,798 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-25 13:21:27,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:27,800 INFO L225 Difference]: With dead ends: 54 [2020-09-25 13:21:27,800 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 13:21:27,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:21:27,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 13:21:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-25 13:21:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 13:21:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-09-25 13:21:27,808 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2020-09-25 13:21:27,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:27,809 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-09-25 13:21:27,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:21:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-09-25 13:21:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 13:21:27,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:27,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:27,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:21:27,811 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:27,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:27,811 INFO L82 PathProgramCache]: Analyzing trace with hash 735393428, now seen corresponding path program 1 times [2020-09-25 13:21:27,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:27,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657991581] [2020-09-25 13:21:27,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:28,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:21:28,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:28,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 13:21:28,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:28,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:21:28,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:28,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:21:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:28,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:28,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:28,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:28,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:28,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:28,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:28,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:21:28,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:28,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:21:28,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:28,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:21:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:21:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:28,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:28,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:28,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:28,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:28,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:21:28,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:28,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:28,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:28,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:28,339 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 13:21:28,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657991581] [2020-09-25 13:21:28,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:28,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 13:21:28,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169879111] [2020-09-25 13:21:28,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:21:28,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:28,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:21:28,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:21:28,343 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 11 states. [2020-09-25 13:21:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:28,647 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-09-25 13:21:28,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:21:28,648 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-09-25 13:21:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:28,649 INFO L225 Difference]: With dead ends: 59 [2020-09-25 13:21:28,649 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 13:21:28,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:21:28,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 13:21:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-09-25 13:21:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 13:21:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-09-25 13:21:28,659 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 30 [2020-09-25 13:21:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:28,659 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-09-25 13:21:28,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:21:28,659 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-09-25 13:21:28,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:21:28,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:28,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:28,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:21:28,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:28,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:28,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1128861445, now seen corresponding path program 1 times [2020-09-25 13:21:28,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:28,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842765354] [2020-09-25 13:21:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:28,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:28,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 13:21:28,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:28,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 13:21:28,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:28,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:28,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:21:28,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:28,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:21:28,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:29,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:29,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:29,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:29,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:29,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:29,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:21:29,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 13:21:29,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:29,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:21:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:29,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:21:29,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:29,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:29,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:21:29,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:29,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 13:21:29,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:29,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:29,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:21:29,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:29,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:29,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:29,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:29,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:21:29,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:29,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:29,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:29,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:29,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:29,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:21:29,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842765354] [2020-09-25 13:21:29,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:29,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:21:29,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411519826] [2020-09-25 13:21:29,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:21:29,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:29,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:21:29,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:21:29,433 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-09-25 13:21:29,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:29,814 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-25 13:21:29,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:21:29,814 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-09-25 13:21:29,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:29,816 INFO L225 Difference]: With dead ends: 64 [2020-09-25 13:21:29,816 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 13:21:29,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:21:29,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 13:21:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-25 13:21:29,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:21:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 13:21:29,825 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 38 [2020-09-25 13:21:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:29,825 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 13:21:29,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:21:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 13:21:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 13:21:29,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:29,827 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, 1, 1, 1, 1] [2020-09-25 13:21:29,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:21:29,827 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:29,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:29,828 INFO L82 PathProgramCache]: Analyzing trace with hash -211667235, now seen corresponding path program 1 times [2020-09-25 13:21:29,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:29,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072752536] [2020-09-25 13:21:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 13:21:30,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-25 13:21:30,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:21:30,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 13:21:30,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,293 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 13 [2020-09-25 13:21:30,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:30,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:30,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:30,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:21:30,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 13:21:30,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:21:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:21:30,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:21:30,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:21:30,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:21:30,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:30,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:21:30,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:21:30,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072752536] [2020-09-25 13:21:30,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:30,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:21:30,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160713482] [2020-09-25 13:21:30,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:21:30,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:30,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:21:30,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:21:30,564 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 13 states. [2020-09-25 13:21:31,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:31,031 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-09-25 13:21:31,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:21:31,032 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-09-25 13:21:31,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:31,034 INFO L225 Difference]: With dead ends: 69 [2020-09-25 13:21:31,034 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 13:21:31,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:21:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 13:21:31,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2020-09-25 13:21:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:21:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 13:21:31,042 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 39 [2020-09-25 13:21:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:31,042 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 13:21:31,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:21:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 13:21:31,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 13:21:31,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:31,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:31,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:21:31,045 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:31,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:31,045 INFO L82 PathProgramCache]: Analyzing trace with hash 320612812, now seen corresponding path program 1 times [2020-09-25 13:21:31,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:31,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351488744] [2020-09-25 13:21:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 13:21:31,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:31,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-09-25 13:21:31,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 13:21:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 13:21:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:31,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:31,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:31,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:31,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:31,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:31,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 13:21:31,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:31,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 13:21:31,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:21:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:21:31,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:31,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:21:32,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:32,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 13:21:32,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:21:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:21:32,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:21:32,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 13:21:32,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:21:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:32,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:21:32,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:32,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 13:21:32,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351488744] [2020-09-25 13:21:32,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:32,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:21:32,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924858447] [2020-09-25 13:21:32,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:21:32,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:32,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:21:32,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:21:32,341 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 15 states. [2020-09-25 13:21:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:32,953 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-09-25 13:21:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:21:32,953 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-09-25 13:21:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:32,954 INFO L225 Difference]: With dead ends: 74 [2020-09-25 13:21:32,955 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 13:21:32,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2020-09-25 13:21:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 13:21:32,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-09-25 13:21:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 13:21:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-25 13:21:32,963 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 47 [2020-09-25 13:21:32,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:32,963 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-25 13:21:32,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:21:32,964 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-25 13:21:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 13:21:32,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:32,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:32,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:21:32,966 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:32,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1757163992, now seen corresponding path program 1 times [2020-09-25 13:21:32,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:32,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946241060] [2020-09-25 13:21:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 13:21:33,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:33,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-25 13:21:33,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 13:21:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:33,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 13:21:33,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:33,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:33,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:33,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:33,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:33,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:33,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 13:21:33,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 13:21:33,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:21:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:21:33,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:33,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:21:33,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 13:21:33,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:21:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:21:33,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:33,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:21:33,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:33,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:21:33,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:21:33,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:33,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:33,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:33,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:21:33,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:33,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:33,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:33,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:21:33,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946241060] [2020-09-25 13:21:33,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:33,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:21:33,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902082841] [2020-09-25 13:21:33,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:21:33,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:33,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:21:33,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:21:33,959 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 16 states. [2020-09-25 13:21:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:34,574 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2020-09-25 13:21:34,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:21:34,574 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-09-25 13:21:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:34,576 INFO L225 Difference]: With dead ends: 79 [2020-09-25 13:21:34,576 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 13:21:34,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2020-09-25 13:21:34,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 13:21:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2020-09-25 13:21:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 13:21:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-25 13:21:34,584 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 48 [2020-09-25 13:21:34,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:34,585 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-25 13:21:34,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 13:21:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-25 13:21:34,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 13:21:34,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:34,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:34,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:21:34,591 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:34,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:34,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1185852169, now seen corresponding path program 2 times [2020-09-25 13:21:34,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:34,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117895470] [2020-09-25 13:21:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:34,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:34,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:35,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 13:21:35,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:35,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-25 13:21:35,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:35,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 13:21:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:21:35,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:35,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:35,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:35,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:35,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:35,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:35,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:35,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:35,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:35,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:21:35,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 13:21:35,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:35,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:35,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 13:21:35,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:35,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:21:35,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:35,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:35,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:35,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 13:21:35,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 13:21:35,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:35,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:21:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:35,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:21:35,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:35,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:35,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:35,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:21:35,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 13:21:35,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:35,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:21:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:21:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:35,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:35,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:35,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:21:35,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:35,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:21:35,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:35,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:21:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:36,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:36,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:36,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:36,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:21:36,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:36,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:36,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 13:21:36,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117895470] [2020-09-25 13:21:36,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:36,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:21:36,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113172237] [2020-09-25 13:21:36,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:21:36,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:36,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:21:36,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:21:36,108 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 17 states. [2020-09-25 13:21:36,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:36,790 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-09-25 13:21:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 13:21:36,791 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-25 13:21:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:36,793 INFO L225 Difference]: With dead ends: 84 [2020-09-25 13:21:36,793 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 13:21:36,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 13:21:36,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 13:21:36,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2020-09-25 13:21:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 13:21:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-25 13:21:36,811 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 56 [2020-09-25 13:21:36,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:36,812 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-25 13:21:36,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 13:21:36,812 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-25 13:21:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 13:21:36,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:36,816 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:36,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:21:36,817 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:36,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:36,818 INFO L82 PathProgramCache]: Analyzing trace with hash 338577365, now seen corresponding path program 2 times [2020-09-25 13:21:36,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:36,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340510397] [2020-09-25 13:21:36,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:36,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:37,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:21:37,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-25 13:21:37,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:37,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 13:21:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 13:21:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:37,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:37,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:37,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:37,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:37,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:37,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:37,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:37,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:37,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:21:37,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 13:21:37,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:37,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 13:21:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 13:21:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:37,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 13:21:37,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 13:21:37,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:37,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:21:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:21:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:37,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:37,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:21:37,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:37,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 13:21:37,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:37,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:37,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:21:37,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:37,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:21:37,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:37,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:37,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:21:37,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:37,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:21:37,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:37,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:21:37,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:38,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:38,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:38,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:38,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:21:38,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:38,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:38,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 13:21:38,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340510397] [2020-09-25 13:21:38,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:38,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:21:38,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105797405] [2020-09-25 13:21:38,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:21:38,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:38,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:21:38,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:21:38,115 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 17 states. [2020-09-25 13:21:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:38,833 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2020-09-25 13:21:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 13:21:38,834 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-09-25 13:21:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:38,836 INFO L225 Difference]: With dead ends: 89 [2020-09-25 13:21:38,837 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 13:21:38,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 13:21:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 13:21:38,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2020-09-25 13:21:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 13:21:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-25 13:21:38,854 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 57 [2020-09-25 13:21:38,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:38,854 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-25 13:21:38,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 13:21:38,858 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-25 13:21:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 13:21:38,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:38,859 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:38,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:21:38,859 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:38,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:38,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1560027652, now seen corresponding path program 2 times [2020-09-25 13:21:38,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:38,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413362759] [2020-09-25 13:21:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:38,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:39,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 13:21:39,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-09-25 13:21:39,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:39,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 13:21:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:21:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:39,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:39,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:39,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:39,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:39,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:39,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:39,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:39,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:39,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:39,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:39,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 13:21:39,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 13:21:39,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:39,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 13:21:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 13:21:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:40,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:40,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:21:40,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:40,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 13:21:40,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:40,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:40,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:21:40,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:40,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:21:40,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:40,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:40,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 13:21:40,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:40,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 13:21:40,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:40,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:40,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:21:40,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:40,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:21:40,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:40,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:40,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:40,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:21:40,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:40,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 13:21:40,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:40,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:21:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:21:40,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:40,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:21:40,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:21:40,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:40,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:40,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:21:40,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:40,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:40,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:40,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:40,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:21:40,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:40,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:40,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:40,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 13:21:40,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413362759] [2020-09-25 13:21:40,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:40,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:21:40,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583059955] [2020-09-25 13:21:40,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:21:40,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:40,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:21:40,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:21:40,812 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 19 states. [2020-09-25 13:21:41,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:41,796 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-09-25 13:21:41,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 13:21:41,796 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 13:21:41,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:41,798 INFO L225 Difference]: With dead ends: 94 [2020-09-25 13:21:41,798 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 13:21:41,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 13:21:41,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 13:21:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 65. [2020-09-25 13:21:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 13:21:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 13:21:41,814 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 65 [2020-09-25 13:21:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:41,814 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 13:21:41,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 13:21:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 13:21:41,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 13:21:41,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:41,816 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:41,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:21:41,817 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:41,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:41,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1346648732, now seen corresponding path program 2 times [2020-09-25 13:21:41,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:41,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391187321] [2020-09-25 13:21:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:42,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:21:42,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:42,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-09-25 13:21:42,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:42,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:42,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 13:21:42,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:42,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 13:21:42,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:42,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:42,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:42,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:42,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:42,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:42,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:42,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:42,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 13:21:42,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:42,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 13:21:42,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:42,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 13:21:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:42,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:21:42,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:42,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:43,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:21:43,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:43,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 13:21:43,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:43,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:21:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:43,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 13:21:43,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:43,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:43,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:43,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 13:21:43,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 13:21:43,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:43,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:21:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:21:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:43,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:43,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:43,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:21:43,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:43,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 13:21:43,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:43,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:21:43,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:43,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:21:43,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:43,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:43,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:43,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:21:43,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:43,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:21:43,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:43,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:43,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:43,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:43,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:21:43,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:43,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:43,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:43,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:21:43,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:43,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:43,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 13:21:43,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391187321] [2020-09-25 13:21:43,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:43,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:21:43,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816632199] [2020-09-25 13:21:43,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:21:43,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:43,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:21:43,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:21:43,639 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 19 states. [2020-09-25 13:21:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:44,601 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2020-09-25 13:21:44,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 13:21:44,601 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-09-25 13:21:44,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:44,603 INFO L225 Difference]: With dead ends: 99 [2020-09-25 13:21:44,603 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 13:21:44,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 13:21:44,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 13:21:44,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2020-09-25 13:21:44,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 13:21:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 13:21:44,609 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 66 [2020-09-25 13:21:44,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:44,609 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 13:21:44,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 13:21:44,610 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 13:21:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 13:21:44,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:44,610 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:44,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:21:44,611 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:44,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1992760179, now seen corresponding path program 3 times [2020-09-25 13:21:44,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:44,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753871738] [2020-09-25 13:21:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:44,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 13:21:45,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:45,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-09-25 13:21:45,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 13:21:45,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:45,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:21:45,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:45,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:45,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:45,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:45,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:45,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:45,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:21:45,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:45,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 13:21:45,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 13:21:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:21:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:46,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 13:21:46,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:46,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 13:21:46,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:46,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 13:21:46,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:46,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 13:21:46,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-09-25 13:21:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:46,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:21:46,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 13:21:46,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:46,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:21:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:46,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:21:46,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:46,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:46,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 13:21:46,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:46,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 13:21:46,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:46,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:46,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:21:46,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:21:46,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:46,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:21:46,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:46,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 13:21:46,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:46,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:46,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:21:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:21:46,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:46,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:46,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:21:46,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:46,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:21:46,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:46,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:21:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:46,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:46,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:46,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:46,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:46,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:21:46,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:46,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 13:21:46,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753871738] [2020-09-25 13:21:46,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:46,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 13:21:46,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839044929] [2020-09-25 13:21:46,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 13:21:46,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:46,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 13:21:46,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:21:46,977 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 21 states. [2020-09-25 13:21:48,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:48,068 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2020-09-25 13:21:48,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 13:21:48,070 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 74 [2020-09-25 13:21:48,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:48,071 INFO L225 Difference]: With dead ends: 104 [2020-09-25 13:21:48,071 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 13:21:48,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 13:21:48,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 13:21:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2020-09-25 13:21:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 13:21:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-25 13:21:48,081 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 74 [2020-09-25 13:21:48,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:48,081 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-25 13:21:48,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 13:21:48,082 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-25 13:21:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 13:21:48,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:48,083 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:48,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:21:48,083 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:48,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:48,083 INFO L82 PathProgramCache]: Analyzing trace with hash -2107047859, now seen corresponding path program 3 times [2020-09-25 13:21:48,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:48,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196620565] [2020-09-25 13:21:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:48,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:48,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 13:21:48,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-09-25 13:21:48,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:48,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 13:21:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 13:21:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:49,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:49,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:49,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:49,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:49,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:49,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:49,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:49,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:49,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:49,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:21:49,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:49,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 13:21:49,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:49,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:49,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 13:21:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:21:49,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:49,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:49,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:49,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 13:21:49,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:49,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 13:21:49,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:49,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 13:21:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:21:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:49,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:49,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:49,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:21:49,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:49,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 13:21:49,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:49,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:21:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 13:21:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:49,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:49,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 13:21:49,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 13:21:49,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:49,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:21:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:21:49,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:50,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:50,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:50,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:21:50,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:50,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 13:21:50,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:50,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:21:50,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:50,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:21:50,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:50,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:50,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:50,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:21:50,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:50,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:21:50,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:50,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:21:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:50,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:50,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:50,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:50,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:50,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:21:50,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:50,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 13:21:50,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196620565] [2020-09-25 13:21:50,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:50,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 13:21:50,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14994649] [2020-09-25 13:21:50,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 13:21:50,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:50,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 13:21:50,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:21:50,402 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 22 states. [2020-09-25 13:21:51,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:51,526 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2020-09-25 13:21:51,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 13:21:51,527 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2020-09-25 13:21:51,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:51,528 INFO L225 Difference]: With dead ends: 109 [2020-09-25 13:21:51,528 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 13:21:51,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 13:21:51,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 13:21:51,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 70. [2020-09-25 13:21:51,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 13:21:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-25 13:21:51,534 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 75 [2020-09-25 13:21:51,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:51,535 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-25 13:21:51,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 13:21:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-25 13:21:51,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 13:21:51,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:51,536 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:51,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 13:21:51,536 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:51,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:51,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1771228740, now seen corresponding path program 3 times [2020-09-25 13:21:51,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:51,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550733607] [2020-09-25 13:21:51,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:52,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 13:21:52,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:52,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-09-25 13:21:52,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:52,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-25 13:21:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 13:21:52,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:52,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:52,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:52,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:52,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:52,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:52,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:52,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:52,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:52,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:53,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:21:53,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:53,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 13:21:53,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:53,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-25 13:21:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:53,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 13:21:53,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:53,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:53,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:21:53,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 13:21:53,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:53,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 13:21:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:21:53,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:53,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:53,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 13:21:53,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 13:21:53,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:53,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 13:21:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 13:21:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:53,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:53,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:53,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:21:53,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:53,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 13:21:53,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:53,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:21:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:53,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:21:53,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:53,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:53,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:53,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:54,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:54,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 13:21:54,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 13:21:54,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:54,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:21:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:21:54,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:54,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:54,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:54,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:21:54,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 13:21:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:54,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:21:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:21:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:54,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:54,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:54,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:54,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:21:54,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 13:21:54,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:54,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:21:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:54,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:54,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:54,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:54,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:54,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:54,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:21:54,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:54,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:54,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:54,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-25 13:21:54,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550733607] [2020-09-25 13:21:54,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:54,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 13:21:54,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765525263] [2020-09-25 13:21:54,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 13:21:54,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:54,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 13:21:54,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:21:54,491 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 23 states. [2020-09-25 13:21:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:56,015 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2020-09-25 13:21:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 13:21:56,016 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 83 [2020-09-25 13:21:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:56,017 INFO L225 Difference]: With dead ends: 114 [2020-09-25 13:21:56,017 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 13:21:56,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=167, Invalid=2089, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 13:21:56,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 13:21:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75. [2020-09-25 13:21:56,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 13:21:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-25 13:21:56,028 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 83 [2020-09-25 13:21:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:56,028 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-25 13:21:56,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 13:21:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-25 13:21:56,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 13:21:56,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:56,030 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:56,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 13:21:56,030 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:56,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:56,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1688547104, now seen corresponding path program 3 times [2020-09-25 13:21:56,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:56,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170053541] [2020-09-25 13:21:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:56,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 13:21:57,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-09-25 13:21:57,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-25 13:21:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:57,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 13:21:57,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:57,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:57,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:57,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 13:21:57,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 13:21:57,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-25 13:21:57,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:21:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:21:57,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 13:21:57,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 13:21:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:21:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 13:21:57,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 13:21:57,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 13:21:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:21:57,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:57,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:57,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:57,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:21:57,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:57,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 13:21:57,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:57,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:21:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 13:21:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:58,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:58,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 13:21:58,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:58,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 13:21:58,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:58,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:21:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:58,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:21:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:58,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:58,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:21:58,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:58,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 13:21:58,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:58,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:21:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:21:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:58,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:58,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:58,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:21:58,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:21:58,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:58,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:21:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:21:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:58,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:58,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:58,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:58,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:58,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:21:58,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:58,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:58,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-25 13:21:58,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170053541] [2020-09-25 13:21:58,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:58,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 13:21:58,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270458984] [2020-09-25 13:21:58,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 13:21:58,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:58,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 13:21:58,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-09-25 13:21:58,574 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 23 states. [2020-09-25 13:22:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:00,041 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2020-09-25 13:22:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 13:22:00,042 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 84 [2020-09-25 13:22:00,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:00,044 INFO L225 Difference]: With dead ends: 119 [2020-09-25 13:22:00,044 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 13:22:00,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=167, Invalid=2089, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 13:22:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 13:22:00,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 75. [2020-09-25 13:22:00,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 13:22:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-25 13:22:00,050 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 84 [2020-09-25 13:22:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:00,050 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-25 13:22:00,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 13:22:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-25 13:22:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 13:22:00,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:00,052 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:00,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 13:22:00,052 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:00,052 INFO L82 PathProgramCache]: Analyzing trace with hash -901694575, now seen corresponding path program 4 times [2020-09-25 13:22:00,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:00,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827983363] [2020-09-25 13:22:00,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:00,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:00,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:01,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 13:22:01,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1224 [2020-09-25 13:22:01,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:01,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-25 13:22:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:22:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 13:22:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:01,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:01,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:01,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:01,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:01,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:01,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:01,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:01,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 13:22:01,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:01,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-25 13:22:01,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:01,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:01,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 13:22:01,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:01,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:22:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:01,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:02,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:22:02,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:02,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 13:22:02,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:02,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 13:22:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 13:22:02,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:02,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:02,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:22:02,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 13:22:02,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:02,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 13:22:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:22:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:02,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:02,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:02,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 13:22:02,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:02,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 13:22:02,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:02,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 13:22:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 13:22:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:02,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:02,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:22:02,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 13:22:02,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:02,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:22:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:22:02,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:02,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:02,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:02,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 13:22:02,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:02,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 13:22:02,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:02,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:02,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:22:02,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:02,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 13:22:02,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:03,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:22:03,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:03,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 13:22:03,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:22:03,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:03,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:22:03,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:03,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:22:03,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:03,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:22:03,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:22:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:22:03,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:03,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:03,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:22:03,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:22:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-09-25 13:22:03,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827983363] [2020-09-25 13:22:03,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:03,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 13:22:03,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262011426] [2020-09-25 13:22:03,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 13:22:03,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:03,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 13:22:03,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:22:03,474 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 25 states. [2020-09-25 13:22:05,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:05,207 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2020-09-25 13:22:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-25 13:22:05,208 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 92 [2020-09-25 13:22:05,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:05,209 INFO L225 Difference]: With dead ends: 124 [2020-09-25 13:22:05,210 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 13:22:05,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=186, Invalid=2570, Unknown=0, NotChecked=0, Total=2756 [2020-09-25 13:22:05,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 13:22:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 80. [2020-09-25 13:22:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 13:22:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-09-25 13:22:05,218 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 92 [2020-09-25 13:22:05,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:05,218 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-09-25 13:22:05,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 13:22:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-09-25 13:22:05,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 13:22:05,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:05,220 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:05,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 13:22:05,220 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash -751656891, now seen corresponding path program 4 times [2020-09-25 13:22:05,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:05,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958379125] [2020-09-25 13:22:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:05,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:06,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 13:22:06,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:06,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1121 [2020-09-25 13:22:06,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:06,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-25 13:22:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:22:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:22:06,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:06,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:06,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:06,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:06,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:06,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:06,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:06,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:06,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:06,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 13:22:06,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:06,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 13:22:06,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:06,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 13:22:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 13:22:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:06,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:07,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 13:22:07,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:07,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 13:22:07,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:07,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 13:22:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:22:07,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:07,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:07,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:07,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:22:07,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:07,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 13:22:07,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:07,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 13:22:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:22:07,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:07,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:07,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:07,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 13:22:07,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:07,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 13:22:07,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:07,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 13:22:07,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:07,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:22:07,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:07,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:22:07,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:07,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 13:22:07,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:07,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 13:22:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:07,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 13:22:07,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:07,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:07,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:07,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 13:22:07,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:07,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 13:22:07,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:07,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 13:22:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:07,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:22:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:07,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:07,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:22:07,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 13:22:07,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:07,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:22:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:22:07,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:07,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:07,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:07,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:22:07,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:07,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:22:07,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:07,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:07,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:22:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:07,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:22:07,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:08,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:08,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:08,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:08,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:22:08,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:08,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:22:08,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:08,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:08,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-09-25 13:22:08,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958379125] [2020-09-25 13:22:08,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:08,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 13:22:08,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025279566] [2020-09-25 13:22:08,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 13:22:08,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:08,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 13:22:08,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-09-25 13:22:08,286 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 26 states. [2020-09-25 13:22:10,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:10,192 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2020-09-25 13:22:10,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-25 13:22:10,193 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 93 [2020-09-25 13:22:10,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:10,194 INFO L225 Difference]: With dead ends: 129 [2020-09-25 13:22:10,194 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 13:22:10,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=2657, Unknown=0, NotChecked=0, Total=2862 [2020-09-25 13:22:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 13:22:10,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 80. [2020-09-25 13:22:10,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 13:22:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-09-25 13:22:10,201 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 93 [2020-09-25 13:22:10,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:10,201 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-09-25 13:22:10,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 13:22:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-09-25 13:22:10,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 13:22:10,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:10,203 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:10,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 13:22:10,203 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:10,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1968989964, now seen corresponding path program 4 times [2020-09-25 13:22:10,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:10,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584803907] [2020-09-25 13:22:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking...