/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:52:51,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:52:51,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:52:51,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:52:51,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:52:51,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:52:51,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:52:51,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:52:51,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:52:51,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:52:51,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:52:51,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:52:51,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:52:52,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:52:52,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:52:52,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:52:52,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:52:52,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:52:52,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:52:52,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:52:52,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:52:52,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:52:52,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:52:52,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:52:52,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:52:52,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:52:52,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:52:52,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:52:52,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:52:52,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:52:52,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:52:52,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:52:52,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:52:52,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:52:52,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:52:52,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:52:52,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:52:52,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:52:52,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:52:52,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:52:52,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:52:52,049 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 00:52:52,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:52:52,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:52:52,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:52:52,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:52:52,104 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:52:52,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:52:52,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:52:52,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:52:52,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:52:52,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:52:52,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:52:52,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:52:52,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:52:52,108 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:52:52,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:52:52,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:52:52,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:52:52,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:52:52,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:52:52,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:52:52,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:52:52,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:52:52,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:52:52,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:52:52,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:52:52,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:52:52,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:52:52,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:52:52,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:52:52,111 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:52:52,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:52:52,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:52:52,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:52:52,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:52:52,627 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:52:52,628 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-25 00:52:52,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b356cf13c/d4dea0910d81467ba955a7da915f12b9/FLAG1705aa4c6 [2020-09-25 00:52:53,302 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:52:53,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-25 00:52:53,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b356cf13c/d4dea0910d81467ba955a7da915f12b9/FLAG1705aa4c6 [2020-09-25 00:52:53,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b356cf13c/d4dea0910d81467ba955a7da915f12b9 [2020-09-25 00:52:53,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:52:53,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:52:53,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:52:53,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:52:53,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:52:53,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:52:53" (1/1) ... [2020-09-25 00:52:53,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1713cc96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:53, skipping insertion in model container [2020-09-25 00:52:53,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:52:53" (1/1) ... [2020-09-25 00:52:53,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:52:53,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:52:53,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:52:53,914 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:52:53,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:52:53,946 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:52:53,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:53 WrapperNode [2020-09-25 00:52:53,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:52:53,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:52:53,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:52:53,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:52:53,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:53" (1/1) ... [2020-09-25 00:52:53,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:53" (1/1) ... [2020-09-25 00:52:53,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:53" (1/1) ... [2020-09-25 00:52:53,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:53" (1/1) ... [2020-09-25 00:52:53,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:53" (1/1) ... [2020-09-25 00:52:53,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:53" (1/1) ... [2020-09-25 00:52:53,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:53" (1/1) ... [2020-09-25 00:52:53,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:52:53,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:52:53,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:52:53,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:52:53,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:53" (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 00:52:54,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:52:54,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:52:54,146 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 00:52:54,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:52:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:52:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:52:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 00:52:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:52:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:52:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:52:54,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:52:54,356 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:52:54,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:52:54 BoogieIcfgContainer [2020-09-25 00:52:54,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:52:54,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:52:54,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:52:54,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:52:54,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:52:53" (1/3) ... [2020-09-25 00:52:54,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abf6949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:52:54, skipping insertion in model container [2020-09-25 00:52:54,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:52:53" (2/3) ... [2020-09-25 00:52:54,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abf6949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:52:54, skipping insertion in model container [2020-09-25 00:52:54,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:52:54" (3/3) ... [2020-09-25 00:52:54,373 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-1.c [2020-09-25 00:52:54,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:52:54,400 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:52:54,433 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:52:54,481 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:52:54,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:52:54,482 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:52:54,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:52:54,483 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:52:54,483 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:52:54,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:52:54,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:52:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 00:52:54,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 00:52:54,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:54,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:54,528 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:54,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:54,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 00:52:54,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:54,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633671662] [2020-09-25 00:52:54,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:52:54,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:54,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 00:52:54,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 00:52:54,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:54,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:52:54,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:54,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:52:54,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:54,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:54,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:54,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:54,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:54,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:52:54,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:54,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:52:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:52:54,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:55,011 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 00:52:55,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633671662] [2020-09-25 00:52:55,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:52:55,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:52:55,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281546921] [2020-09-25 00:52:55,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:52:55,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:55,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:52:55,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:52:55,046 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 00:52:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:55,171 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 00:52:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:52:55,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 00:52:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:55,188 INFO L225 Difference]: With dead ends: 44 [2020-09-25 00:52:55,188 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 00:52:55,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:52:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 00:52:55,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 00:52:55,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:52:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:52:55,255 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 00:52:55,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:55,256 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:52:55,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:52:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:52:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 00:52:55,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:55,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:55,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:52:55,260 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:55,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:55,261 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 00:52:55,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:55,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711257205] [2020-09-25 00:52:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:55,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:55,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:55,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:55,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 00:52:55,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 00:52:55,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:52:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:55,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:55,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:55,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:55,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:55,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:55,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:52:55,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:55,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:55,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:55,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:55,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:55,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:55,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:55,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:55,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:55,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 00:52:55,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:55,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:52:55,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:55,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:55,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:55,516 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 00:52:55,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711257205] [2020-09-25 00:52:55,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:52:55,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:52:55,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489482867] [2020-09-25 00:52:55,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:52:55,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:55,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:52:55,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:52:55,521 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 00:52:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:55,564 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 00:52:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:52:55,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 00:52:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:55,567 INFO L225 Difference]: With dead ends: 36 [2020-09-25 00:52:55,567 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:52:55,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:52:55,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:52:55,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 00:52:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:52:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:52:55,577 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 00:52:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:55,578 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:52:55,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:52:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:52:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:52:55,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:55,580 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:55,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:52:55,581 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:55,581 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 00:52:55,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:55,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680121862] [2020-09-25 00:52:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:55,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:55,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:55,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:57,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:57,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 00:52:57,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:52:57,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1972 [2020-09-25 00:52:57,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:57,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:52:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:52:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:52:57,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-09-25 00:52:57,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:57,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:57,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:57,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:52:57,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:57,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:57,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:57,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:57,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:58,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:52:58,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:52:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-09-25 00:52:58,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:58,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:52:58,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:52:58,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:58,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:58,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:52:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:58,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:58,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:58,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:58,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:52:58,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:52:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:52:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:58,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:58,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:52:58,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 00:52:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:52:58,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680121862] [2020-09-25 00:52:58,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:58,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:52:58,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26038557] [2020-09-25 00:52:58,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:52:58,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:58,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:52:58,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:52:58,204 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-09-25 00:52:58,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:58,362 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 00:52:58,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:52:58,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 00:52:58,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:58,364 INFO L225 Difference]: With dead ends: 52 [2020-09-25 00:52:58,365 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:52:58,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:52:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:52:58,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 00:52:58,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 00:52:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 00:52:58,375 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 00:52:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:58,376 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 00:52:58,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:52:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 00:52:58,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 00:52:58,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:58,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:58,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:52:58,379 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:58,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:58,379 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 00:52:58,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:58,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546957836] [2020-09-25 00:52:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:58,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:59,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:52:59,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:52:59,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1161 [2020-09-25 00:52:59,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:52:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:52:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:52:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:59,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:52:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:59,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:52:59,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:59,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:52:59,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:52:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:52:59,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:59,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:52:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:59,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:52:59,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:59,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 00:52:59,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:52:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:52:59,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:52:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:59,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:59,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:52:59,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:59,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:52:59,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:59,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:52:59,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:59,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:59,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:52:59,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:52:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:59,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:52:59,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:52:59,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:52:59,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 00:52:59,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:52:59,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:52:59,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:52:59,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:52:59,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:52:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 00:52:59,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546957836] [2020-09-25 00:52:59,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:52:59,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:52:59,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724635645] [2020-09-25 00:52:59,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:52:59,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:52:59,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:52:59,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:52:59,766 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-09-25 00:52:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:52:59,876 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-09-25 00:52:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:52:59,877 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 00:52:59,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:52:59,880 INFO L225 Difference]: With dead ends: 48 [2020-09-25 00:52:59,880 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 00:52:59,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:52:59,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 00:52:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-09-25 00:52:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 00:52:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-09-25 00:52:59,891 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2020-09-25 00:52:59,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:52:59,891 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-09-25 00:52:59,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:52:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-09-25 00:52:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 00:52:59,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:52:59,893 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:52:59,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:52:59,894 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:52:59,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:52:59,894 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 00:52:59,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:52:59,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063630878] [2020-09-25 00:52:59,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:52:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:52:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:52:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:00,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:00,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:01,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:01,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:53:01,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:53:01,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1953 [2020-09-25 00:53:01,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:01,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:53:01,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:53:01,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:01,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:01,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:01,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:01,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:01,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:01,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:01,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:01,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:01,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:01,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:01,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:02,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:02,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:53:02,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-09-25 00:53:02,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:53:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:02,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:02,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:02,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:02,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:02,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:02,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:53:02,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:02,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:02,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:02,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:02,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:02,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:02,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:02,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:02,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:02,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 00:53:02,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:02,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:02,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 00:53:02,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063630878] [2020-09-25 00:53:02,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:02,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:53:02,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776451464] [2020-09-25 00:53:02,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:53:02,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:02,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:53:02,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:53:02,546 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 9 states. [2020-09-25 00:53:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:02,692 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-09-25 00:53:02,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:53:02,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 00:53:02,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:02,695 INFO L225 Difference]: With dead ends: 76 [2020-09-25 00:53:02,695 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 00:53:02,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:53:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 00:53:02,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 00:53:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 00:53:02,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-09-25 00:53:02,707 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 35 [2020-09-25 00:53:02,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:02,707 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-09-25 00:53:02,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:53:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-09-25 00:53:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:53:02,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:02,710 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:02,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:53:02,711 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:02,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:02,711 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 00:53:02,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:02,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682250648] [2020-09-25 00:53:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:02,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:02,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:03,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:07,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:07,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:53:07,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:53:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 00:53:07,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:53:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 00:53:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:53:07,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:07,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:07,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:07,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:07,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:07,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:07,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:07,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:07,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:07,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:07,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:07,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:53:07,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 00:53:07,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:53:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 00:53:07,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:07,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:07,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:08,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:08,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:08,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 00:53:08,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:08,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:53:08,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:08,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:53:08,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:08,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:08,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:08,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:08,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:08,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:53:08,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:53:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:08,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:08,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:08,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 00:53:08,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:08,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:08,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:08,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:08,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:08,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:08,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:08,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:08,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:08,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:53:08,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:08,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 00:53:08,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682250648] [2020-09-25 00:53:08,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:08,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:53:08,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310978331] [2020-09-25 00:53:08,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:53:08,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:08,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:53:08,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:53:08,193 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 11 states. [2020-09-25 00:53:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:08,379 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-09-25 00:53:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 00:53:08,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-25 00:53:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:08,382 INFO L225 Difference]: With dead ends: 56 [2020-09-25 00:53:08,382 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 00:53:08,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:53:08,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 00:53:08,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-09-25 00:53:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 00:53:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2020-09-25 00:53:08,392 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 52 [2020-09-25 00:53:08,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:08,392 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2020-09-25 00:53:08,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:53:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2020-09-25 00:53:08,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:53:08,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:08,396 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:08,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:53:08,397 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:08,397 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 00:53:08,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:08,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239273102] [2020-09-25 00:53:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:08,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:11,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:13,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 00:53:13,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:53:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 00:53:13,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:53:13,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:53:13,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:13,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:13,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:13,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:13,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:13,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:53:13,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:13,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:13,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:13,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:13,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:13,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:13,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:15,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:18,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 00:53:18,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:53:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 00:53:18,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:53:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 00:53:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:18,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:18,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:18,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:18,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 00:53:18,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:18,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:18,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:18,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:18,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:53:18,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:18,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:18,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:18,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:18,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:53:18,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:18,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:18,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:18,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:21,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:21,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:53:21,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:53:21,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2433 [2020-09-25 00:53:21,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:21,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:21,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:21,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:53:21,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:21,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:21,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:21,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:21,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:21,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:21,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:21,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 00:53:21,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:21,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:53:21,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:21,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:21,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:21,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:21,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:21,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:21,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:21,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 00:53:21,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:21,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:53:21,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:21,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:21,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:21,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:21,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:21,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:53:21,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:21,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:21,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:21,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:21,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:21,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:21,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:53:21,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:21,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 75 proven. 83 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 00:53:21,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239273102] [2020-09-25 00:53:21,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:21,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:53:21,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051310503] [2020-09-25 00:53:21,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:53:21,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:21,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:53:21,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:53:21,576 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 11 states. [2020-09-25 00:53:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:21,844 INFO L93 Difference]: Finished difference Result 99 states and 135 transitions. [2020-09-25 00:53:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 00:53:21,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-09-25 00:53:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:21,846 INFO L225 Difference]: With dead ends: 99 [2020-09-25 00:53:21,846 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 00:53:21,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:53:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 00:53:21,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-09-25 00:53:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 00:53:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-09-25 00:53:21,865 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 87 [2020-09-25 00:53:21,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:21,866 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-09-25 00:53:21,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:53:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-09-25 00:53:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 00:53:21,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:21,873 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 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] [2020-09-25 00:53:21,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:53:21,873 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:21,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:21,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1505694539, now seen corresponding path program 4 times [2020-09-25 00:53:21,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:21,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227430367] [2020-09-25 00:53:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:21,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:22,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:22,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:26,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:26,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:26,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 00:53:26,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:53:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 00:53:26,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:53:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 00:53:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:26,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:26,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:26,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:26,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:26,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:26,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:26,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:27,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:29,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 00:53:29,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:53:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2257 [2020-09-25 00:53:29,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:53:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:53:29,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 00:53:29,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 00:53:29,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:30,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:53:30,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:53:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1232 [2020-09-25 00:53:30,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:53:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:53:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:30,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:30,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:30,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:30,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:30,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 00:53:30,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:53:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:30,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:30,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:53:30,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:30,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:30,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:30,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:30,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:53:30,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:30,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:30,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:30,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:30,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:30,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:30,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 00:53:30,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:30,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 00:53:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:30,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:30,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:30,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:30,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:53:30,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:53:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:30,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:30,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 73 proven. 12 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 00:53:30,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227430367] [2020-09-25 00:53:30,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:30,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:53:30,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344002413] [2020-09-25 00:53:30,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:53:30,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:30,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:53:30,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:53:30,605 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 8 states. [2020-09-25 00:53:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:30,747 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2020-09-25 00:53:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:53:30,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-25 00:53:30,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:30,749 INFO L225 Difference]: With dead ends: 100 [2020-09-25 00:53:30,749 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 00:53:30,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:53:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 00:53:30,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-09-25 00:53:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 00:53:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-09-25 00:53:30,757 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 70 [2020-09-25 00:53:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:30,757 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-09-25 00:53:30,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:53:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-09-25 00:53:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:53:30,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:30,759 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:30,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:53:30,759 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:30,760 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 5 times [2020-09-25 00:53:30,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:30,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438173033] [2020-09-25 00:53:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:30,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:32,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:35,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 00:53:35,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:53:35,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:53:35,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:53:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:53:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 00:53:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:35,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:53:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:35,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:35,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:53:35,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:53:35,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:35,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:35,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:53:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:35,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:36,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:36,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:40,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 00:53:40,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:53:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 00:53:40,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:53:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:53:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 00:53:40,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:40,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:40,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:42,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:53:42,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:53:42,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1628 [2020-09-25 00:53:42,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:53:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:53:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:42,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:42,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:42,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:53:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 00:53:42,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:53:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:53:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:42,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:42,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:42,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:53:42,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:53:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:53:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:42,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:42,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:42,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:42,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:53:42,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:53:42,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:42,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:53:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:42,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:42,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:53:42,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:42,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:53:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:42,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 00:53:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:42,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:42,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:53:42,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:53:42,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:53:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:53:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:42,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:53:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:42,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:53:42,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:42,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:53:42,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:42,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:53:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:42,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:53:42,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:53:42,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:53:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:53:42,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:53:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:53:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:53:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:53:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:53:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 26 proven. 105 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 00:53:42,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438173033] [2020-09-25 00:53:42,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:53:42,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:53:42,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669012756] [2020-09-25 00:53:42,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:53:42,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:53:42,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:53:42,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:53:42,815 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 9 states. [2020-09-25 00:53:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:53:43,019 INFO L93 Difference]: Finished difference Result 112 states and 138 transitions. [2020-09-25 00:53:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:53:43,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 00:53:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:53:43,021 INFO L225 Difference]: With dead ends: 112 [2020-09-25 00:53:43,021 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 00:53:43,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:53:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 00:53:43,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 00:53:43,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 00:53:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2020-09-25 00:53:43,041 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 87 [2020-09-25 00:53:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:53:43,041 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2020-09-25 00:53:43,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:53:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2020-09-25 00:53:43,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 00:53:43,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:53:43,044 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:53:43,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:53:43,047 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:53:43,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:53:43,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1001388386, now seen corresponding path program 6 times [2020-09-25 00:53:43,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:53:43,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431448842] [2020-09-25 00:53:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:53:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:53:43,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:53:43,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking...