/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:25:39,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:25:39,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:25:39,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:25:39,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:25:39,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:25:39,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:25:39,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:25:39,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:25:39,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:25:39,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:25:39,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:25:39,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:25:39,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:25:39,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:25:39,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:25:39,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:25:39,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:25:39,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:25:39,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:25:39,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:25:39,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:25:39,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:25:39,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:25:39,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:25:39,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:25:39,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:25:39,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:25:39,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:25:39,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:25:39,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:25:39,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:25:39,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:25:39,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:25:39,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:25:39,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:25:39,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:25:39,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:25:39,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:25:39,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:25:39,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:25:39,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:25:39,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:25:39,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:25:39,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:25:39,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:25:39,646 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:25:39,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:25:39,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:25:39,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:25:39,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:25:39,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:25:39,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:25:39,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:25:39,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:25:39,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:25:39,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:25:39,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:25:39,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:25:39,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:25:39,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:25:39,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:25:39,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:25:39,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:25:39,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:25:39,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:25:39,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:25:39,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:25:39,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:25:39,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:25:39,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:25:39,652 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:25:40,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:25:40,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:25:40,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:25:40,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:25:40,102 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:25:40,103 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-24 19:25:40,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cda107293/70e425f3616b4f3e8e0291dd5ef08666/FLAGe00904f96 [2020-09-24 19:25:40,862 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:25:40,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-24 19:25:40,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cda107293/70e425f3616b4f3e8e0291dd5ef08666/FLAGe00904f96 [2020-09-24 19:25:41,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cda107293/70e425f3616b4f3e8e0291dd5ef08666 [2020-09-24 19:25:41,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:25:41,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:25:41,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:25:41,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:25:41,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:25:41,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:25:41" (1/1) ... [2020-09-24 19:25:41,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593c4d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:41, skipping insertion in model container [2020-09-24 19:25:41,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:25:41" (1/1) ... [2020-09-24 19:25:41,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:25:41,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:25:41,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:25:41,670 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:25:41,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:25:41,981 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:25:41,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:41 WrapperNode [2020-09-24 19:25:41,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:25:41,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:25:41,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:25:41,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:25:42,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:41" (1/1) ... [2020-09-24 19:25:42,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:41" (1/1) ... [2020-09-24 19:25:42,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:41" (1/1) ... [2020-09-24 19:25:42,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:41" (1/1) ... [2020-09-24 19:25:42,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:41" (1/1) ... [2020-09-24 19:25:42,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:41" (1/1) ... [2020-09-24 19:25:42,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:41" (1/1) ... [2020-09-24 19:25:42,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:25:42,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:25:42,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:25:42,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:25:42,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:25:42,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:25:42,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:25:42,212 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:25:42,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:25:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:25:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:25:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:25:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:25:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:25:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:25:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:25:43,564 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:25:43,565 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:25:43,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:25:43 BoogieIcfgContainer [2020-09-24 19:25:43,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:25:43,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:25:43,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:25:43,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:25:43,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:25:41" (1/3) ... [2020-09-24 19:25:43,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3725bb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:25:43, skipping insertion in model container [2020-09-24 19:25:43,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:41" (2/3) ... [2020-09-24 19:25:43,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3725bb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:25:43, skipping insertion in model container [2020-09-24 19:25:43,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:25:43" (3/3) ... [2020-09-24 19:25:43,588 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-09-24 19:25:43,601 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:25:43,612 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:25:43,636 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:25:43,672 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:25:43,673 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:25:43,673 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:25:43,673 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:25:43,673 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:25:43,673 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:25:43,674 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:25:43,674 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:25:43,707 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:25:43,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-24 19:25:43,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:43,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:43,728 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:43,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash -672460611, now seen corresponding path program 1 times [2020-09-24 19:25:43,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:43,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631818181] [2020-09-24 19:25:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:44,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:44,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:44,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:45,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:45,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-24 19:25:45,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:45,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:25:45,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:25:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 19:25:45,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:25:45,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:45,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:45,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:45,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:45,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:45,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 19:25:45,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:45,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:45,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:45,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:45,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631818181] [2020-09-24 19:25:45,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:45,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:25:45,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401631877] [2020-09-24 19:25:45,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:25:45,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:45,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:25:45,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:25:45,375 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 19:25:47,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:47,607 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-24 19:25:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:25:47,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-09-24 19:25:47,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:47,640 INFO L225 Difference]: With dead ends: 1235 [2020-09-24 19:25:47,641 INFO L226 Difference]: Without dead ends: 661 [2020-09-24 19:25:47,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:47,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-24 19:25:47,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-24 19:25:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-24 19:25:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-24 19:25:47,776 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 113 [2020-09-24 19:25:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:47,778 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-24 19:25:47,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:25:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-24 19:25:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-24 19:25:47,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:47,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:47,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:25:47,787 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:47,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:47,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1544605760, now seen corresponding path program 1 times [2020-09-24 19:25:47,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:47,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745515279] [2020-09-24 19:25:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:47,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:48,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:48,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 19:25:48,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:25:48,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:25:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:25:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 19:25:48,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:49,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:49,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:49,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:49,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:25:49,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:25:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 19:25:49,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:49,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:49,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:49,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:49,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:25:49,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 19:25:49,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:25:49,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 19:25:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 19:25:49,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745515279] [2020-09-24 19:25:49,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:49,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:25:49,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391056795] [2020-09-24 19:25:49,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:25:49,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:49,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:25:49,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:49,287 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-24 19:25:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:51,230 INFO L93 Difference]: Finished difference Result 1505 states and 1856 transitions. [2020-09-24 19:25:51,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:25:51,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-09-24 19:25:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:51,238 INFO L225 Difference]: With dead ends: 1505 [2020-09-24 19:25:51,238 INFO L226 Difference]: Without dead ends: 924 [2020-09-24 19:25:51,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:25:51,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-24 19:25:51,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-24 19:25:51,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-24 19:25:51,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-24 19:25:51,284 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 130 [2020-09-24 19:25:51,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:51,285 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-24 19:25:51,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:25:51,285 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-24 19:25:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-24 19:25:51,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:51,292 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:51,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:25:51,292 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:51,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:51,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1541769362, now seen corresponding path program 1 times [2020-09-24 19:25:51,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:51,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341520998] [2020-09-24 19:25:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:51,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:51,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:51,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:52,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:52,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-24 19:25:52,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:52,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:25:52,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:25:52,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:52,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:52,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:52,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:52,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:52,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:52,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:25:52,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:25:52,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:52,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:52,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:52,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:52,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:52,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 19:25:52,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:52,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:52,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:52,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:25:52,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:52,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 19:25:52,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:52,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:52,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:25:52,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:52,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341520998] [2020-09-24 19:25:52,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:52,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:52,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139349640] [2020-09-24 19:25:52,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:52,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:52,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:52,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:52,741 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 7 states. [2020-09-24 19:25:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:54,786 INFO L93 Difference]: Finished difference Result 2144 states and 2702 transitions. [2020-09-24 19:25:54,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:54,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-24 19:25:54,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:54,802 INFO L225 Difference]: With dead ends: 2144 [2020-09-24 19:25:54,802 INFO L226 Difference]: Without dead ends: 1277 [2020-09-24 19:25:54,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:54,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-24 19:25:54,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1077. [2020-09-24 19:25:54,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-24 19:25:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-24 19:25:54,907 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 175 [2020-09-24 19:25:54,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:54,907 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-24 19:25:54,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-24 19:25:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 19:25:54,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:54,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:54,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:25:54,919 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:54,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:54,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1796968621, now seen corresponding path program 1 times [2020-09-24 19:25:54,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:54,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567060415] [2020-09-24 19:25:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:55,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:55,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:55,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:55,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:55,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:55,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 19:25:55,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:25:55,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:25:55,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 19:25:55,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 19:25:55,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:56,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:56,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:56,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:56,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:56,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:56,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:25:56,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:56,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:56,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:56,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:56,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:56,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:56,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:56,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:25:56,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:56,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:56,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:25:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:56,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:56,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:25:56,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:56,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 19:25:56,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:25:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 19:25:56,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567060415] [2020-09-24 19:25:56,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:56,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:25:56,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953345697] [2020-09-24 19:25:56,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:25:56,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:56,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:25:56,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:56,354 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 5 states. [2020-09-24 19:25:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:58,188 INFO L93 Difference]: Finished difference Result 2143 states and 2650 transitions. [2020-09-24 19:25:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:25:58,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-24 19:25:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:58,199 INFO L225 Difference]: With dead ends: 2143 [2020-09-24 19:25:58,199 INFO L226 Difference]: Without dead ends: 1090 [2020-09-24 19:25:58,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:25:58,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2020-09-24 19:25:58,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 932. [2020-09-24 19:25:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2020-09-24 19:25:58,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1086 transitions. [2020-09-24 19:25:58,240 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1086 transitions. Word has length 182 [2020-09-24 19:25:58,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:58,241 INFO L479 AbstractCegarLoop]: Abstraction has 932 states and 1086 transitions. [2020-09-24 19:25:58,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:25:58,242 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1086 transitions. [2020-09-24 19:25:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 19:25:58,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:58,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:58,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:25:58,249 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:58,249 INFO L82 PathProgramCache]: Analyzing trace with hash 604576851, now seen corresponding path program 1 times [2020-09-24 19:25:58,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:58,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111027227] [2020-09-24 19:25:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:58,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:59,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:59,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-24 19:25:59,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:59,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 19:25:59,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 19:25:59,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 19:25:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:59,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:59,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:59,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:59,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:59,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:25:59,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:59,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:59,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:59,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:59,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:59,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:59,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:25:59,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:59,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:25:59,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:59,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:25:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:25:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:59,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:59,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:25:59,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:59,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 19:25:59,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:25:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:00,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111027227] [2020-09-24 19:26:00,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:00,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:00,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460769965] [2020-09-24 19:26:00,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:00,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:00,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:00,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:00,041 INFO L87 Difference]: Start difference. First operand 932 states and 1086 transitions. Second operand 7 states. [2020-09-24 19:26:02,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:02,141 INFO L93 Difference]: Finished difference Result 2253 states and 2775 transitions. [2020-09-24 19:26:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:26:02,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-09-24 19:26:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:02,155 INFO L225 Difference]: With dead ends: 2253 [2020-09-24 19:26:02,155 INFO L226 Difference]: Without dead ends: 1345 [2020-09-24 19:26:02,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:26:02,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-09-24 19:26:02,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1224. [2020-09-24 19:26:02,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2020-09-24 19:26:02,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1432 transitions. [2020-09-24 19:26:02,216 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1432 transitions. Word has length 197 [2020-09-24 19:26:02,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:02,217 INFO L479 AbstractCegarLoop]: Abstraction has 1224 states and 1432 transitions. [2020-09-24 19:26:02,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:02,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1432 transitions. [2020-09-24 19:26:02,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 19:26:02,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:02,223 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:02,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:26:02,223 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:02,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:02,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1209028362, now seen corresponding path program 1 times [2020-09-24 19:26:02,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:02,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359930611] [2020-09-24 19:26:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:02,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:02,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:02,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:02,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:02,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:03,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:03,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:03,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-24 19:26:03,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:26:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-24 19:26:03,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-24 19:26:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 19:26:03,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:03,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:03,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:03,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:03,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:03,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:03,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:03,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:03,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:03,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:03,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:03,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:03,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:03,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:03,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:03,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:26:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:03,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:03,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:03,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:26:03,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:03,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 19:26:03,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 19:26:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 19:26:03,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359930611] [2020-09-24 19:26:03,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:03,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:03,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526294948] [2020-09-24 19:26:03,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:03,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:03,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:03,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:03,666 INFO L87 Difference]: Start difference. First operand 1224 states and 1432 transitions. Second operand 5 states. [2020-09-24 19:26:05,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:05,825 INFO L93 Difference]: Finished difference Result 2724 states and 3244 transitions. [2020-09-24 19:26:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:05,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-09-24 19:26:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:05,839 INFO L225 Difference]: With dead ends: 2724 [2020-09-24 19:26:05,839 INFO L226 Difference]: Without dead ends: 1167 [2020-09-24 19:26:05,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-09-24 19:26:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1155. [2020-09-24 19:26:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-09-24 19:26:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1346 transitions. [2020-09-24 19:26:05,887 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1346 transitions. Word has length 197 [2020-09-24 19:26:05,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:05,888 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1346 transitions. [2020-09-24 19:26:05,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1346 transitions. [2020-09-24 19:26:05,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-24 19:26:05,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:05,896 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:05,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:26:05,897 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:05,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:05,897 INFO L82 PathProgramCache]: Analyzing trace with hash -170677919, now seen corresponding path program 1 times [2020-09-24 19:26:05,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:05,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681465308] [2020-09-24 19:26:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:05,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:06,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:06,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-24 19:26:06,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:06,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-09-24 19:26:06,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:07,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 19:26:07,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:26:07,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:07,159 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-09-24 19:26:07,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:07,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:07,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:07,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:07,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:07,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:07,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:07,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:07,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:07,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:07,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:07,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:07,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:07,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:07,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:26:07,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:07,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:26:07,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:07,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:07,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:07,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:07,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:07,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:07,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:26:07,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:07,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:07,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:26:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 19:26:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:07,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:07,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:07,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:07,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:26:07,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:07,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:07,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-24 19:26:07,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:07,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 103 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 19:26:07,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681465308] [2020-09-24 19:26:07,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:07,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:07,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613190416] [2020-09-24 19:26:07,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:07,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:07,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:07,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:07,478 INFO L87 Difference]: Start difference. First operand 1155 states and 1346 transitions. Second operand 8 states. [2020-09-24 19:26:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:09,780 INFO L93 Difference]: Finished difference Result 2822 states and 3357 transitions. [2020-09-24 19:26:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:09,781 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-09-24 19:26:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:09,792 INFO L225 Difference]: With dead ends: 2822 [2020-09-24 19:26:09,792 INFO L226 Difference]: Without dead ends: 1691 [2020-09-24 19:26:09,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 19:26:09,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-09-24 19:26:09,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1304. [2020-09-24 19:26:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1304 states. [2020-09-24 19:26:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1537 transitions. [2020-09-24 19:26:09,869 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1537 transitions. Word has length 218 [2020-09-24 19:26:09,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:09,869 INFO L479 AbstractCegarLoop]: Abstraction has 1304 states and 1537 transitions. [2020-09-24 19:26:09,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1537 transitions. [2020-09-24 19:26:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-24 19:26:09,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:09,876 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:09,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:26:09,876 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:09,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:09,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2080918392, now seen corresponding path program 1 times [2020-09-24 19:26:09,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:09,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257587310] [2020-09-24 19:26:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:10,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:10,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-24 19:26:10,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:10,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-24 19:26:10,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 19:26:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 19:26:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:11,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:11,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:11,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:11,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:11,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:11,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:11,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:11,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:11,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:26:11,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:11,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 19:26:11,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:11,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:11,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:26:11,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:11,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:26:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:11,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:11,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:11,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:11,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:11,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 19:26:11,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:11,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:11,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:11,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:26:11,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:11,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257587310] [2020-09-24 19:26:11,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:11,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:11,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502082927] [2020-09-24 19:26:11,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:11,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:11,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:11,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:11,414 INFO L87 Difference]: Start difference. First operand 1304 states and 1537 transitions. Second operand 7 states. [2020-09-24 19:26:13,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:13,996 INFO L93 Difference]: Finished difference Result 3167 states and 3793 transitions. [2020-09-24 19:26:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:26:13,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2020-09-24 19:26:13,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:14,006 INFO L225 Difference]: With dead ends: 3167 [2020-09-24 19:26:14,007 INFO L226 Difference]: Without dead ends: 1887 [2020-09-24 19:26:14,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2020-09-24 19:26:14,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1823. [2020-09-24 19:26:14,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1823 states. [2020-09-24 19:26:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2101 transitions. [2020-09-24 19:26:14,061 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2101 transitions. Word has length 223 [2020-09-24 19:26:14,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:14,062 INFO L479 AbstractCegarLoop]: Abstraction has 1823 states and 2101 transitions. [2020-09-24 19:26:14,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:14,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2101 transitions. [2020-09-24 19:26:14,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 19:26:14,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:14,071 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:14,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:26:14,071 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:14,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:14,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1076497044, now seen corresponding path program 1 times [2020-09-24 19:26:14,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:14,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148261140] [2020-09-24 19:26:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:14,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:14,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:14,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:14,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:14,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:14,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-24 19:26:15,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:26:15,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:26:15,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-24 19:26:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 19:26:15,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:15,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:15,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:15,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:15,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:15,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:15,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:15,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:15,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:15,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:15,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:15,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:15,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:15,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:15,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:26:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:15,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:26:15,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:15,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:26:15,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:26:15,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 19:26:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:15,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:15,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:15,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:15,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 19:26:15,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:15,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:15,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:26:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 19:26:15,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148261140] [2020-09-24 19:26:15,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:15,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:15,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237729180] [2020-09-24 19:26:15,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:15,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:15,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:15,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:15,679 INFO L87 Difference]: Start difference. First operand 1823 states and 2101 transitions. Second operand 7 states. [2020-09-24 19:26:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:18,246 INFO L93 Difference]: Finished difference Result 4035 states and 4674 transitions. [2020-09-24 19:26:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:26:18,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-09-24 19:26:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:18,256 INFO L225 Difference]: With dead ends: 4035 [2020-09-24 19:26:18,256 INFO L226 Difference]: Without dead ends: 2236 [2020-09-24 19:26:18,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:18,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2020-09-24 19:26:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2159. [2020-09-24 19:26:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2159 states. [2020-09-24 19:26:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 2450 transitions. [2020-09-24 19:26:18,316 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 2450 transitions. Word has length 230 [2020-09-24 19:26:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:18,316 INFO L479 AbstractCegarLoop]: Abstraction has 2159 states and 2450 transitions. [2020-09-24 19:26:18,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:18,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 2450 transitions. [2020-09-24 19:26:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 19:26:18,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:18,325 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:18,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:26:18,326 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:18,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1579470037, now seen corresponding path program 1 times [2020-09-24 19:26:18,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:18,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447789952] [2020-09-24 19:26:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:18,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:18,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:18,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:19,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-24 19:26:19,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 19:26:19,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1048 [2020-09-24 19:26:19,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:26:19,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 19:26:19,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:19,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:19,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:19,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:19,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:26:19,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:19,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:19,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:19,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:19,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:19,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:19,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:26:19,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:26:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:26:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:19,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:19,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:19,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:26:19,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 19:26:19,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:26:19,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:19,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 19:26:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:19,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:19,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:19,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:19,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:19,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 19:26:19,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:26:19,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 137 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 19:26:20,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447789952] [2020-09-24 19:26:20,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:20,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:20,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768558386] [2020-09-24 19:26:20,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:20,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:20,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:20,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:20,029 INFO L87 Difference]: Start difference. First operand 2159 states and 2450 transitions. Second operand 7 states. [2020-09-24 19:26:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:22,501 INFO L93 Difference]: Finished difference Result 4981 states and 5956 transitions. [2020-09-24 19:26:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:22,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-09-24 19:26:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:22,515 INFO L225 Difference]: With dead ends: 4981 [2020-09-24 19:26:22,516 INFO L226 Difference]: Without dead ends: 2642 [2020-09-24 19:26:22,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:26:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2020-09-24 19:26:22,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2249. [2020-09-24 19:26:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-09-24 19:26:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2515 transitions. [2020-09-24 19:26:22,593 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2515 transitions. Word has length 239 [2020-09-24 19:26:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:22,594 INFO L479 AbstractCegarLoop]: Abstraction has 2249 states and 2515 transitions. [2020-09-24 19:26:22,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2515 transitions. [2020-09-24 19:26:22,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-24 19:26:22,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:22,604 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:22,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:26:22,604 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:22,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:22,605 INFO L82 PathProgramCache]: Analyzing trace with hash -143386659, now seen corresponding path program 1 times [2020-09-24 19:26:22,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:22,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959776411] [2020-09-24 19:26:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:22,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:23,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:23,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-24 19:26:23,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:26:23,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-24 19:26:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:26:23,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:23,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:23,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:23,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:23,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:23,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:26:23,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:23,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:23,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:23,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:23,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:26:23,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:23,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:26:23,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:23,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:23,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:23,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:23,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:23,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:26:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:23,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:23,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 19:26:23,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:26:23,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 19:26:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:23,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-24 19:26:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:23,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:24,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:24,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:24,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:24,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 19:26:24,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:26:24,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 19:26:24,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959776411] [2020-09-24 19:26:24,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:24,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:24,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095690236] [2020-09-24 19:26:24,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:24,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:24,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:24,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:24,121 INFO L87 Difference]: Start difference. First operand 2249 states and 2515 transitions. Second operand 7 states. [2020-09-24 19:26:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:26,060 INFO L93 Difference]: Finished difference Result 5898 states and 6731 transitions. [2020-09-24 19:26:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:26,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-09-24 19:26:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:26,078 INFO L225 Difference]: With dead ends: 5898 [2020-09-24 19:26:26,078 INFO L226 Difference]: Without dead ends: 3673 [2020-09-24 19:26:26,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:26,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2020-09-24 19:26:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3383. [2020-09-24 19:26:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3383 states. [2020-09-24 19:26:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3383 states to 3383 states and 3792 transitions. [2020-09-24 19:26:26,170 INFO L78 Accepts]: Start accepts. Automaton has 3383 states and 3792 transitions. Word has length 248 [2020-09-24 19:26:26,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:26,171 INFO L479 AbstractCegarLoop]: Abstraction has 3383 states and 3792 transitions. [2020-09-24 19:26:26,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3383 states and 3792 transitions. [2020-09-24 19:26:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-24 19:26:26,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:26,184 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:26,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:26:26,185 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:26,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:26,186 INFO L82 PathProgramCache]: Analyzing trace with hash 593163376, now seen corresponding path program 1 times [2020-09-24 19:26:26,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:26,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454760727] [2020-09-24 19:26:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:26,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:26,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:27,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-24 19:26:27,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:27,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:26:27,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-09-24 19:26:27,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-24 19:26:27,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:27,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:27,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:27,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:26:27,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:27,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:27,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:27,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:27,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:27,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:27,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:27,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:26:27,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:27,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:27,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:26:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:27,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:27,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:26:27,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:26:27,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:27,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-24 19:26:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:27,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:27,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:26:27,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:27,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 19:26:27,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 19:26:27,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 126 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-24 19:26:27,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454760727] [2020-09-24 19:26:27,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:27,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:27,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14072564] [2020-09-24 19:26:27,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:27,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:27,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:27,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:27,605 INFO L87 Difference]: Start difference. First operand 3383 states and 3792 transitions. Second operand 5 states. [2020-09-24 19:26:29,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:29,355 INFO L93 Difference]: Finished difference Result 6664 states and 7465 transitions. [2020-09-24 19:26:29,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:29,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-09-24 19:26:29,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:29,357 INFO L225 Difference]: With dead ends: 6664 [2020-09-24 19:26:29,357 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:26:29,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:26:29,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:26:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:26:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:26:29,372 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 255 [2020-09-24 19:26:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:29,372 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:26:29,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:26:29,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:26:29,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 19:26:29,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:26:29,690 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-09-24 19:26:29,899 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-09-24 19:26:30,379 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-09-24 19:26:30,839 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77